Investigation on teaching quality at the beginning of 20 13 senior high school in Jiangsu province: Entrance Examination for Chemistry No.4 Middle School (Middle School Attached to South Normal Univer

Investigation on teaching quality at the beginning of 20 13 senior high school in Jiangsu province: Entrance Examination for Chemistry No.4 Middle School (Middle School Attached to South Normal University, Huaiyin Noon, Haimen Middle School, tianyi middle school) 20 12-20 13 school year senior three chemistry examination paper of the second semester teaching quality survey.

This paper is divided into two parts: multiple-choice questions and non-multiple-choice questions, with a full score of 120. Examination time 100 minutes.

Precautions:

1. Before answering questions, candidates must write down their names, exam subjects, admission ticket numbers, etc. In the name column of the answer sheet, scribble it on the answer sheet with 2B pencil.

2. After choosing the correct answer to each question, black the answer label of the corresponding question number on the answer sheet with 2B pencil. If you need to change it, clean it with an eraser and choose another answer. I can't answer on the test paper.

3. After the exam, return the answer sheet. Magnesium-24s-32cl-35.5k-39fe-56cu-64zn-65

Possible relative atomic mass: h-1b-112n-14o-16na-23.

Multiple choice questions (***40 points)

Multiple choice questions: This question contains 10 small questions, with 2 points for each small question and * * 20 points. Only one option in each small question meets the meaning of the question.

1 and PM2.5 refer to particles with a diameter less than or equal to 2.5 microns in the atmosphere, which are the main causes of haze weather, mainly from the combustion of fossil fuels. The following statement about PM2.5 is incorrect.

A. Vigorously develop electric vehicles and reduce exhaust emissions from fuel vehicles.

B develop and utilize various new energy sources to reduce dependence on fossil fuels.

C. Polycyclic aromatic hydrocarbons are strong carcinogens, which can be adsorbed on the surface of PM2.5 and enter the human body.

D.PM2.5 contains harmful elements such as lead, cadmium, chromium, vanadium and arsenic, all of which are metal elements.

2. The following chemical terms are correct.

A. the electronic form of A.H2O2: b.b. the proportional model of CO2;

C.2- Structural abbreviation of 2-methyl-1- butene: D. Structural formula of carbonyl sulfide (COS):

3. In the following solution, ions can be stored in large quantities.

A Fe2+, Na+, so42- and NO3-in the solution can make the purple litmus test solution turn red.

B. in the aqueous solution of C (H+) ∶ C (OH-) = 1 ∶ 2: Na+, K+, NO3-,ClO-

C. C (H+) =10-12 mol/L Water and ionization: Na+, Cu2+, Cl-, S2-

D, adding NH4+, SO4 2-, Cl- and ClO-into the solution in which aluminum can release hydrogen.

4. Let NA be the value of Avon Gadereau constant, and the following statement is correct.

A.8.4gNaHCO3 solid contains HCO3? The number is 0. 1NA.

B.60g of silica contains 2NA and has Si-O bond.

C1mol N2 and 3 mol H2 synthesize ammonia, and the number of NH3 molecules generated is 2NA.

D. 1 mol chlorine gas completely reacts with calcium hydroxide to generate calcium chloride and calcium hypochlorite, and the number of electrons transferred is 2NA.

5. Which of the following statements about the nature or application of substances is correct?

More light oil and gaseous olefins can be obtained by catalytic cracking and cracking of petroleum.

B silicon is a nonmetallic main group element, and its oxide can be used to make computer chips.

C. Metals such as C.Mg and Fe react with water under certain conditions to generate H2 and corresponding hydroxide.

D. When concentrated sodium sulfate solution is added to protein solution, precipitation occurs, which is called denaturation.

6.q, W, X, Y and Z are short-period elements with increasing atomic numbers, X and Y are metal elements, and the flame color of X is yellow. The sum of the nuclear charges of five elements is 54, and the sum of the outermost electrons is 20. W and Z are elements of the same main group, and the nuclear charge of Z is twice that of W. Generally, Y is obtained by electrolytic oxidation in industry. Then the following statement is incorrect.

A. atomic radius: x > y > q > w

The aqueous solution of the compound formed by B, X, Y and W is alkaline.

The hydride stability of C. W. is stronger than that of Z.

D, Q and W can form compounds with atomic number ratios of1:1and 2:1.

7. Using the following experimental device to complete the corresponding experiment can achieve the experimental purpose.

8. The following ionic equation is correct.

A. The reason why sodium sulfide aqueous solution is alkaline: S2-+2H2SO4+2OH-

B, dripping Ba(OH)2 solution into NH4Al(SO4)2 solution to completely precipitate SO;

2ba 2 ++ 4OH-+Al3 ++ 2so 42-= = = 2 baso 4↓+AlO+2H2O

C ferrous oxide is dissolved in dilute nitric acid: FeO+2h+= = = Fe2+2h2o.

D, electrolyzing NaCl solution with inert electrode: 2na++2cl-+2h2o2nNaOH+H2 =+Cl2 =

9. Under given conditions, the following substances can be transformed.

① SO2 H2SO3 H2SO4 ② NH3 NO2 HNO3

③CaCl 2 CaCO3 CaO④NAA lo 2(AQ)Al(OH)3 al2o 3

A.②③ B.①④ C.②④ D.③④

10. The following illustrations and corresponding descriptions must be correct.

A. the reaction shown in figure 1: x (g)+2y (g) 3z (g), and curve b must indicate increasing pressure.

B Figure 2 shows that the ammonia synthesis reaction is exothermic, and B shows that a catalyst is added to the reaction system.

C. as shown in fig. 3, when t 1℃ and the mass fractions of solution a and solution b are both 20%, when the temperature rises to t 2℃, the mass fractions of solutes in the two solutions are still equal.

D. as shown in fig. 4, hydrochloric acid and acetic acid with the same pH value are diluted with water, where I stands for acetic acid and II stands for hydrochloric acid, and the conductivity of the solution is: c > b > a.

Indefinite multiple-choice question: This question includes 5 small questions, each with 4 points and * * 20 points. Only one or two options match each question.

The meaning of the question. If the correct answer contains only one option, when multiple choices are made, the question will get 0 point; If the correct answer includes two options, only

Choose the right one to get 2 points, choose the right two to get full marks, but as long as you choose the wrong one, you will get 0 points for making a fuss.

1 1. Hutuo oil (d) is used as the raw material of perfume, which can be prepared by a:

The following statement is correct.

A. If organic matter A is obtained by heating isoprene (C5H8) and acrylic acid (C3H4O2), the reaction type belongs to addition reaction.

B. Organic substance B can not only generate aldehyde through catalytic oxidation reaction, but also react with sodium bicarbonate solution to release CO2 gas.

C. all isomers of organic substance c cannot have aromatic compounds.

D. All carbon atoms in organic D molecules must be * * * planes.

12. The picture on the right is the schematic diagram of charging and discharging of lithium ion battery. The positive and negative reaction equations of the battery during discharge are as follows:

Negative electrode: Li-e-= = Li+ positive electrode: li4ti5o12+3li++3e-= = = li7ti5o12.

The following statement is correct.

When A. K is connected with n, Li+ migrates from the A-pole region to the B-pole region.

B there are at least three forms of energy conversion in the whole charging and discharging process.

When C. K is in contact with m, a is the anode, and oxidation reaction occurs.

When D is discharged, 1 mol electrons are transferred, and 0.5mol li++ should be transferred from the right battery to the left battery.

13. The following experimental methods and conclusions are correct.

A. During acid-base neutralization titration, the conical flask needs to be wetted and washed twice with the solution to be tested, and then the solution to be tested is added.

B, combined alkali production method is to introduce carbon dioxide and ammonia into saturated sodium chloride solution to generate sodium carbonate.

C. dropping AgNO3 solution of 0.0 1 mol/L into NaCl and Na2CrO4 solution of 0.0 1 mol/l to precipitate AgCl first and then KSP (AgCl) < KSP (Ag2Cro4).

D, reducing test of sucrose hydrolysate: firstly, adding a proper amount of dilute NaOH solution to the sucrose hydrolysate for neutralization, then adding a newly prepared silver ammonia solution, and heating in water bath.

14. The relationship between the amount and concentration of particulate matter in the following solution is correct.

A. at 25℃, the pH=8 of NaB solution is 8, and c (na+)–c (b-) = 9.9×10-7mol/l.

B at 25℃, HCOOH with pH=2 was mixed with NaOH with pH= 12 in equal volume;

c(HCOO-)+ c(H+) c(SO42-)> c(NH4+)> c(OH-)= c(H+)

15. The reducing agent CO in ironmaking is obtained by the reaction of coke and CO2. Coke and CO2 were put into a sealed container with a certain volume of 2L, and the following reactions were carried out at high temperature: c (s)+CO2 (g) 2co (g) △ h = qkj/mol. The following figure shows the relationship between the amount of CO2 and CO, n, and time, t ... The following statement is correct.

A. 1 ~ 3min，v(co)= v(CO2)；

When the pressure in the container is constant, the reaction must reach equilibrium.

Status, and

C. if the temperature rises from T 1 to T2 within 3min, then q >；; Oh, and ...

=4.7

D. after 5 minutes, a certain amount of CO is added, and the curves of c and b are respectively

Said the change of n(CO), n(CO2)

Non-multiple choice questions (***80 points)

16.( 14) Sr is a group IIA element in the fifth cycle. High-purity strontium chloride hexahydrate crystal (SRLC26H2O) has high economic value. At 6 1℃, the crystal began to lose its crystallization water, and at 100℃, it lost all its crystallization water. The process of preparing high-purity strontium chloride hexahydrate crystal from industrial strontium carbonate powder (containing a small amount of impurities such as Ba and Fe compounds) is shown in the figure.

Please answer the following questions:

(1) Operation ① Measures to speed up the reaction include ▲ (write a method casually).

(2) The purpose of adding a small amount of 30% H2O2 solution is ▲

(3) In step (3), adjust the PH value of the solution to 8- 10, and the appropriate reagent is _ _ _ _ _ _ _ _ _ _ _ (fill in the serial number).

A. ammonia B. strontium hydroxide powder C. sodium hydroxide D. strontium oxide powder

The main components of the obtained filter residue are _ _ ▲ _, ▲ (fill in chemical formula).

(4) In step ⑤, the reason why a small amount of ice water is selected to wash the strontium chloride crystal is ▲

The suitable temperature range for industrial drying of strontium chloride hexahydrate with hot air is _ _ _ _ _ _ _ _.

A.50 ~ 60℃ B.70 ~ 80℃ C.80 ~100℃ D.100℃ above

(5) If the concentration of Ba2+ in the filtrate is 1× 10-5mol/L, according to the data in the right table, it can be estimated that the quantitative concentration of Sr2+ in the filtrate is _ _ _ _ _ _ _ _ _ _ _ _.

17.( 14 points) The following figure is the traditional synthesis roadmap of arthritis analgesic (F):

Please answer the following questions:

The chemical equation of (1)A→B is ▲.

(2) The number of chiral carbon atoms in C molecule is ▲; The reaction type of D→E ▲.

(3)E is hydrolyzed under acidic conditions to generate F and inorganic salts, and the cation in the inorganic salts is ▲.

(4) The homologue X with 5 carbon atoms less than F has many isomers, among which the isomer structure of X satisfying the following conditions is (write any one) ▲.

① belongs to aromatic compounds, ② has only 1 substituent on benzene ring, ③ belongs to esters.

(5) The arthritis analgesic (F) synthesized by the improved method is synthesized from 2- methyl-1- propanol and benzene, with high yield and atomic utilization rate. Try to write the synthesis roadmap of arthritis analgesic (F) by an improved method (acetic anhydride and other inorganic reagents are optional). An example of the synthetic route flow chart is as follows:

CH3CH2OH CH2=CH2 Br-CH2CH2-Br

Known: ①

②

18.( 12 min) Sodium nitrite is an important chemical raw material, which can be prepared by the following methods:

Step 1: In the absorption tower, the tail gas discharged from nitric acid production (volume fraction: containing 0.5% NO, 1.5% NO2) is completely absorbed by soda solution, and the mixed solution of NaNO2, NaNO3 and Na2CO3 and CO2 gas are obtained.

Step 2: send the mixed solution in the absorption tower to the conversion tower, add 50% HNO3 solution, and at the same time introduce enough compressed air to stir and fully react to obtain the mixed solution of NaNO3 and nitric acid.

Step 3: Neutralize the mixed solution in the conversion tower with soda ash, and then evaporate, concentrate, cool, crystallize, centrifuge and dry to obtain the finished product NaNO3.

It is known that 0.65 t anhydrous Na2CO3, 33.6 m3 oxygen (under standard conditions) and a certain amount of HNO3 are needed to produce 1.0 t pure NaNO3 solid. The tail gas discharged in the production process does not contain nitrogen oxides.

Answer the following questions:

(1) The total chemical equation of the first step of production is ▲.

(2) The method to test whether the finished product of NaNO3 contains a small amount of Na2CO3 impurities is ▲.

(3) The utilization rate of Na2CO3 in the production process is ▲ (the calculation result is accurate to two decimal places).

(4) producing 1.0 t pure NaNO3 solid, and the tail gas emission from nitric acid production can reach at least ▲ m3.

(under standard conditions).

19.( 14 min) Boron is an important nonmetallic element, and the element boron can be made from magnesite Mg2B2O5 H2O.

Step 1: dissolve magnesite with concentrated alkali NaOH solution, and filter to obtain NaBO2 solution.

Step 2: after NaBO2 is concentrated, CO2 is introduced to adjust alkalinity, and borax Na2B4O7 10H2O is precipitated.

Step 3: dissolve borax in water, adjust the acidity with H2SO4, and filter to obtain H3BO3 crystal.

Step 4: Heat boric acid to dehydrate it.

Step 5, reducing the dehydrated product with magnesium to obtain crude boron. Please answer the following questions:

(1) The chemical equations of step ① and step ⑤ are ▲ and ▲ respectively.

(2) Under certain conditions, the prepared crude boron completely reacts to generate BI3, and then BI3 is thermally decomposed to obtain pure elemental boron. I2 obtained by decomposition of BI3 made of 0.20g crude boron was collected, and then titrated with 2.00mol/L na2s _ 2O _ 3 solution, and 27.00ml na2s _ 2O _ 3 solution (called I2+2S _ 2O _ 3-= 2i-+S4O _ 62-) was used.

① The burette containing Na2S2O3 solution is ▲ (containing "acid" or "alkali").

The indicator used in the titration process is▲, and the titration end point phenomenon is▲.

② The content of boron in crude boron is ▲.

(3) The borax crystal (Na2B4O7 10H2O) prepared above can also be prepared.

Sodium borate is an excellent bleaching agent and widely used in washing powder.

Bleaching powder, detergent. Known elements in pure sodium perborate crystals

The molar ratio of substances is n (na): n (b): n (h): n (o) = n.

Length: 1:n:7. When the pure sample is heated above 70℃, it will gradually

When crystal water is lost, the change of pure product quality with temperature is shown in the following figure, and the chemical formula of the crystal obtained at T3 is:

▲ 。 If the reaction temperature is not properly controlled, sodium perborate crystals will be mixed with NaBO2, and the mass fraction of sodium in the product is ▲ (fill in "increase", "decrease" or "unchanged").

20.( 14) urea (H2NCONH2) is a very important high-nitrogen fertilizer, which plays a very important role in industrial and agricultural production.

(1) The reaction of industrial synthesis of urea is as follows:

2 NH3(l)+CO2(g)H2O(l)+H2 nconh 2(l)△H =- 103.7 kJ·mol- 1

In the following measures, _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

A. adopt high temperature B. adopt high pressure C. find a more efficient catalyst.

⑵ The reaction of synthesizing urea is divided into the following two steps:

Step 1: 2nh3 (L)+CO2 (G) H2nconh4 (ammonium carbamate) (l) △H 1.

Step 2: H2 nconh4 (l) H2O (l)+H2 nconh2 (l) △ H2.

An experimental group simulates the conditions of industrial synthesis of urea, and puts 4 mol of ammonia and 1mol of carbon dioxide into a closed container with a volume of 0.5 L. The experimental results show that the changes of each component in the reaction with time are shown in Figure 1 below:

① It is known that the total reaction speed is determined by the slow step, so the total reaction speed of urea synthesis is determined by the first step, and it reaches equilibrium when the total reaction reaches ▲ min.

② The change of the equilibrium constant K of the second step reaction with temperature is shown in Figure 2 above, and then △H2 ▲ 0 (fill in ">").

⑶ When the temperature is 70-95℃, NO and NO2 in industrial tail gas can be absorbed by urea solution and converted into N2.

① Urea reacts with NO and NO2, and the chemical equation is▲.

② N2 (g)+O2 (g) = 2no (g) △ h =180.6kj mol-1.

N2 (g) +3H2 (g) = 2NH3 (g) △ h =-92.4kj mol-1

2h 2(g)+O2(g)= 2H2O(g)△H =—483.6 kJ mol— 1

Then 4NO (g)+4NH3 (g)+O2 (g) = 4N2 (g)+6H2O (g) △ H = ▲ kjmol-1.

(4) The structure of urea fuel cell is shown in the following figure. Its working hours are negative.

The polar electrode reaction equation can be expressed as ▲.

2 1.( 12) This topic includes two sub-topics, A and B, which correspond to the two elective courses "Material Structure and Properties" and "Experimental Chemistry" respectively.

The content of the module. Please select one of the questions and answer it in the corresponding answer area. If you do both questions, score according to question A.

A. The popular science reading "Molecules and China" initiated by Academician Xu Guangxian and co-created by Academician students was recently published. The book vividly depicts many stars in "molecules * * and countries", such as BF3, TiO2, CH3COOH, CO2, NO, ferrocene, NH3, HCN, H2S, O3, isoprene and terpenoids.

(1) Write the arrangement formula of the extranuclear electrons of Fe2+.

(2) The following statement is correct.

A. Both A.H2S and ozone molecules are linear.

B.BF3 and NH3 are both nonpolar molecules with polar bonds.

The structural formulas of C.c.CO2 and H-C ≡ N molecules are O=C=O and H-C ≡ N respectively.

The hybridization modes of carbon atoms in D. Ch3cooh molecule are sp2 and sp3.

(3)NO is a signal molecule in human body, and the relevant statement is correct.

A. the atomic radius n is greater than ob. Non-metallic o is greater than n.

The structural formula of c. No+ is [n ≡ O]+D. No forms a molecular crystal.

(Among the natural crystals of TiO _ 2, the most stable crystal structure is shown in figure 1, and white balls represent atoms.

(5) The high melting point of acetic acid is due to the existence of dimers (including cyclic structures) bonded by intermolecular hydrogen bonds. Please draw a picture.

The structure of this dimer:.

(6) Ferrocene (C5H5)2Fe is a ligand formed by Fe2+ and cyclopentadienyl.

The iron content can be determined in the laboratory: the complexing agent phenanthroline can be used.

() can form a red complex with Fe2+ (as shown in Figure 2 on the right).

There are coordination bonds formed by Fe2+ and nitrogen atoms in the coordination ions.

2 1b titration. (12 min) is a common method to determine the concentration of substances in solution in scientific research and production.

(1) Mohr method is a precipitation titration method. Using K2CrO4 as indicator, titrate the solution to be tested with standard silver nitrate, and then determine the concentration of Cl- in the solution. [KSP (silver chloride) =1.56x10-10, KSP (silver chloride) = 65.

(1) The phenomenon of titration end point is _ _ _ _ _ _ _ _ _ _ _ _;

② It is known that the suitable acidity range for this titration is pH 6.5 ~ 10.5. When ammonium salt exists in the solution and C (NH4+) < 0.05 mol/L, the pH of the solution should be controlled at 6.5 ~ 7.2. The following statement that you think is reasonable is _ _ _ _ _ _ _.

A. If the pH of the solution is less than 6.5, the equilibrium of cr2o 72-+H2O 2 cro 42-+2h+ moves to the left, which leads to the late precipitation of Ag2CrO4 and affects the experimental results.

B. If ammonium salt exists in the solution, when the pH is greater than 7.2, [Ag(NH3)2]+ may be generated, which will affect the experimental results.

C. During titration, Cl- adsorbed by AgCl precipitation should be released in time to prevent the titration end point from being advanced.

(2) Redox titration is a common method for water environment monitoring, which can be used to determine the chemical oxygen consumption in wastewater (unit: mg/L-the mass of O2 required for reducing substances to be oxidized in each liter of water). Acidify 100.00mL wastewater sample with sulfuric acid, and then add 25.00mL of 0.0 1667mol/L K2Cr2O7 solution, so that the reducing substances in the water sample are completely oxidized under certain conditions. Then titrate the remaining Cr2O72 with 0. 1000mol/L FeSO4 standard solution. The experimental data are recorded as follows:

experimental data

Experimental serial number

Volume reading of ferrous sulfate solution/ml

Before titration

After titration

first time

0. 10

16.20

second time

0.30

15.3 1

the third time

0.20

15. 19

(1) Complete the balance of ion equation;

_ _ _ _ _ _ cr2o 72—+_ _ _ _ _ _ Fe2 ++ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Cr3 ++ Fe3 ++ H2O

② Calculate the chemical oxygen consumption of wastewater samples. Write down the calculation process and the result will be accurate to one decimal place. )

Reference Answers to the Investigation of Teaching Quality of Nanjing Normal University Third Senior Middle School, tianyi middle school, Huaiyin Middle School, Haimen Middle School and Nanjing Normal University Jiangning Branch in the Next Term.

1— 10、D D B A A D B A B B

BC11-AD 15 years

16, (14 points, 2 points for each space)

(1) Raise the temperature, increase the concentration of hydrochloric acid, and fully stir.

(2) Fe2+ is oxidized to Fe3+(3) BD; Barium sulfate, iron hydroxide

(4) Reduce the loss caused by dissolution in the washing process.

(5) Not exceeding 0.03 mol/L.

17.( 14 points, the last 1 question 4 points, the remaining 2 points)

half

( 1) +(CH3CO)2O → +CH3COOH

(2) 1 elimination reaction

(3)NH4+

(4)

(5)

18.( 12 points, 3 points for each space)

(1) no+3no2+2na2co3 = 3nano2+nano3+2co2 (3 points)

(2) Dissolve a small amount of NaNO3 _ 3 sample in water and add CaCl2 _ 2 solution dropwise. If a white precipitate is formed, the precipitate disappears when hydrochloric acid is added, indicating the existence of Na2CO3; Otherwise there is no Na2CO3. (3 points)

(3)0.96 (3 points) (4) 4,480 (3 points)

19.( 14 points, 2 points for each space)

( 1)mg 2 B2 o 5·5H2O+2 NaOH = 2 nabo 2+2mg(OH)2↓+4H2O

B2O3+3Mg=3MgO+2B

(2) ① Alkaline burette, starch solution and blue color fade, and do not fade within 30s.

②97.2%

(3) Sodium borohydride

20.( 14, 2 points in each space)

⑴B

⑵①255 ②>

⑷①CO(NH2)2+NO+NO2 = CO2+2 N2+2H2O

②- 1446.6KJ mol- 1

⑷CO(NH2)2+H2O-6e-=CO2+N2+6H+

2 1.( 12 points)

A. Extranuclear electron arrangement of (1) and Fe2+: [Ar]3d6 (2), cd (3) and abcd.

(4), oxygen (O) (6), 6

B (1) ① Drop the last drop of standard solution to generate brick red precipitate (2 points).

② Basic knowledge (3 points)

(2) ① _1_ _ cr2o72-+_ 6fe2+_14h+_ 2cr3+_ 6 _ Fe3+_ 7h2o (2 points)

(2) Analyzing the experimental data record table, the first experimental data is wrong, so this data is excluded.

The average volume of FeSO4 standard solution consumed is [(15.31-0.30)+(15.19-0.20)]/2 =15.00 ml (/kloc-)

The total amount of K2Cr2O7 consumed in wastewater is 0.01667mol/l× 0.025l-1/6x15.00x10-3l× 0.1000mol/l =

According to 2K2Cr2O7~3 O2, the chemical oxygen consumption in wastewater is known.

M (O2) = (0.1667mmol×1.5× 32g/mol) ÷ 0.1000l = 80.0mg/l (2 points