D．At the same temperature and the same molarity，the PH of Na2CO3(aq) is less than that of NaHCO3(aq)
50.Which of the following is correct? ( ) A. At room temperature,Al doesn’t react with concentrated sulfuric acid, which is called passivation.
B. SO2 can make KMnO4(H+) solution fade,showing its bleaching effect. C. Ammonia cannot be dried by concentrated H2SO4.
D. SO2 and Cl2 are put together into the water at the equal moles. Thus,the bleaching effect of the final solution is increasing. Ⅱ.non-choice question(25分)
1. Ambient air quality standard(环境空气质量标准) issued In March, 2012 indicates that the nation plays further attention to the environment.
①The car exhaust catalytic purification devices(尾气催化净化装置) can make NO、CO react with each other to produce CO2 and another kind of nontoxic(无毒的)gas, the gas is (write down its formula).
②The formation of the acid rain is caused by SO2 produced by burning coal,SO2 finally changed into an acid,the acid is (write down its formula).
③putting some limestone(石灰石) into the coal can greatly reduce the emissions(排放)of SO2, the chemical equations are 、 、 .
2. Each of the following box stands for a reactant or product and thick box stands for initial reactant. When reacting,the water added or produced can be ignored(忽略). Among them,F stands elementary substance and it is used widely in daily life.
Please fill in the blank:
1) write down the chemical fomula:
B ，F ，J ，G .
2）write down the net ionic equation of reaction ①: .
3.Finish the following equations according to the demands.
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1) sodium reacts with water (net ionic equation)
2) At high temperature,aluminum reacts with Fe2O3.(chemical equation)
3) Excess SO2 reacts with NaOH(aq) (net ionic equation)
4)SO2 andCl2 are aired into the water at the same moles. (net ionic equation)
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江苏省常州高级中学2011-2012高一美国课程班下学期期中考试试卷（化学） 答题纸
name： student number mark： I. choice (only one correct answer) 选项 答案 选项 答案 选项 答案 选项 答案 选项 1 11 21 31 41 2 12 22 32 42 3 13 23 33 43 4 14 24 34 44 5 15 25 35 45 6 16 26 36 46 7 17 27 37 47 8 18 28 38 48 9 19 29 39 49 10 20 30 40 50 Ⅱ 1. ① ② .
③ 、 、 .
2. 1)
B ，F ，J ，G .
2） .
3. 1) .
2) .
3) .
4) .
参考答案：
Ⅰ1D 2D3A 4D5C 6B 7B 8C 9C 10E 11A12E 13C 14C 15E 16A17E 18B 19D20C 21B 22B 23D 24A 25D 26D 27D 28C 29A 30B 31C32C 33B 34C 35C 36B 37D 38D 39A 40A 41B 42C 43B 44D 45C 46B 47B48A 49D 50C
Ⅱ1.①N2, ②H2SO4 ③ CaCO3(s)→CaO(s)+CO2(g),CaO(s)+SO2(g)→CaSO3(s),2CaSO3(s)+O2→2CaSO4(s)
2.1)B:Cl2; F:Fe ; J:Fe(OH)3; G:HCl 3.1)2Na(s)+2H2O(l)→2Na(aq)+2OH(aq)+H2(g) 2)2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s)
3)SO2(g)+OH(aq)→HCO3(aq)
4)SO2(g)+Cl2(g)+2H2O(l)→SO42-(aq)+2Cl-(aq)+4H+(aq)
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