现有常温下c(H+)=0.01mol/L的盐酸甲和c(H+)=0.01mol/L的醋酸溶液乙

现有常温下cH+)=0.01mol/L的盐酸甲和cH+)=0.01mol/L的醋酸溶液乙,回答下列问题:

1)常温下0.1mol/LCH3COOH溶液加水稀释过程,下列表达式的数据变大的是___
   A. c
H+                               B. cH+/ cCH3COOH         
   C. c
H+·cOH                  D. cOH/ cH+
2)取10mL的乙溶液,加入等体积的水,醋酸的电离平衡          (填向左向右)移动;另取10mL的乙溶液,加入少量无水醋酸钠固体(假设加入固体前后,溶液体积保持不变),待固体溶解后,溶液中cH+/cCH3COOH)的比值将                  (填增大减小无法确定)。
3)相同条件下,取等体积的甲、乙两溶液,各稀释100倍。稀释后的溶液,其pH大小关系为:pH(甲)_____ pH(乙)( 填)。
4)取等体积的甲、乙两溶液,分别用等浓度的NaOH稀溶液中和,则消耗的NaOH溶液的体积大小关系为:V(甲)           V(乙)( 填)。
5)已知25℃时,三种酸的电离平衡常数如下:

化学式

CH3COOH

H2CO3

HClO

电离平衡常数K1

1.8×105

4.3×107

3.0×108

K2

——

5.6×1011

——

下列四种离子结合H能力最强的是______________
  A. HCO3        B. CO32         C. ClO         D. CH3COO

请写出在次氯酸钠溶液中通入少量二氧化碳气体的离子方程式:_________________________________________                   

答案

(1)BD(2)   (2)向右(1)  减小(1)    (3)>(1)   (4) < (1)

(5)B(1)    ClO +  CO2 +  H2O   HClO + HCO3 (2)

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