配套习题- 化学平衡常数的意义及其影响因素 -【青果学苑】

1/5单选题

难度：

1.在某温度下，可逆反应mA+nB

pC+qD平衡常数为K，下列说法正确的是

A	K越大，达到平衡时，反应进行的程度越大
B	K越小，达到平衡时，反应物的转化率越大
C	K随反应物浓度的改变而改变
D	K随着温度的升高而增小

正确答案：QQ==

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

2/5单选题

难度：

2.下列反应处于平衡状态，2SO₂（g）+O₂（g）

2SO₃（g）△H=-200kJ•mol^-1，欲提高平衡常数K的值，应采取的措施是

A	降低温度
B	增大压力
C	加入氧气
D	去掉三氧化硫

正确答案：QQ==

5YyW5a2m5bmz6KGh5bi45pWw5piv5rip5bqm55qE5Ye95pWw44CC6ZmN5L2O5rip5bqm77yM5bmz6KGh5ZCR5q2j5Y+N5bqU5pa55ZCR56e75Yqo77yM5bmz6KGh5bi45pWw5aKe5aSn77yM6ICM5Y6L5by644CB5rWT5bqm562J6YO95LiN5pS55Y+Y5bmz6KGh5bi45pWw77yb5pWF6YCJQS4gPGJyPg==

3/5单选题

难度：

3.反应CO（g）+H₂O（g）

CO₂（g）+H₂（g）在800℃达到平衡时，分别改变下列条件，K值会发生变化的是

A	将体积减小至原来的一半
B	加入催化剂
C	将反应温度升高至1000℃
D	增大水蒸气的浓度

正确答案：Qw==

5YyW5a2m5bmz6KGh5bi45pWw5piv5rip5bqm55qE5Ye95pWw44CC5Y2H6auY5rip5bqm77yM5bmz6KGh5bi45pWw5pS55Y+Y44CCPGJyPuiAjOWOi+W8uuOAgea1k+W6puOAgeWCrOWMluWJguetiemDveS4jeaUueWPmOW5s+ihoeW4uOaVsOOAgjxicj7mlYXpgIlDLiA8YnI+

4/5单选题

难度：

4.下列有关平衡常数说法正确的是

A	温度越高，K值越大
B	K值越大，反应的转化率越小
C	K值越大，反应的转化率越大
D	K值的大小与起始浓度有关

正确答案：Qw==

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

5/5单选题

难度：

5.关于可逆反应A（s）+B（g）

2C（g）；△H＜0，平衡常数为K，下列说法正确的是

A
B	K值越大表示达到平衡时，正反应进行程度越大
C	其它条件不变时，温度升高，K值增大
D	其它条件不变时，压强减小，K值减小

正确答案：Qg==

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