用石墨电极电解下列溶液,阴、阳两极产生气体的体积比为2∶1,且

用石墨电极电解下列溶液,阴、阳两极产生气体的体积比为21,且电解后溶液的pH增大的是

AKCl          BNaOH          CNa2SO4          DH2SO4

答案

B

相关题目

人民币加快升值,已经并将继续对我国经济和人民生活产生
人民币加快升值,已经并将继续对我国经济和人民生活产生影响。下列属于这一影响的有 ①有利于促进外贸出口发展          ②不利于我国吸引外
夏天剥开冰棒纸时,可以看到冰棒的周围冒“白气”,这些
夏天剥开冰棒纸时,可以看到冰棒的周围冒“白气”,这些“白气”是由空气中的水蒸气遇冷时  A.升华形成的       B.凝华形成的      C.凝
---- Do you _________ he is an excellent student?    ----Of course, he is. Wha
---- Do you _________ he is an excellent student?    ----Of course, he is. What’s more, he has a gift _____ music. A. admit; for    B. admit; over   C. permit; for    D. allow; on
---Look! Someone has broken the coffee cup!    ---Well, it ______ me    A. i
---Look! Someone has broken the coffee cup!    ---Well, it ______ me    A. isn’t           B. wasn’t              C. hasn’t been        D. hadn’t
,则f(x)=4x+的最小值为( ) A.-3                 
,则f(x)=4x+的最小值为( ) A.-3                                 B.2  C.5                                   D.7
This is by farmovie that I have ever seen. A.an inspiring           
This is by farmovie that I have ever seen. A.an inspiring             B.a much inspiring C.the most inspiring         D.the more inspiring
截至2009年10月,我国已有昆曲、端午节等29个项目被联合国教
截至2009年10月,我国已有昆曲、端午节等29个项目被联合国教科文组织列入“人类非物质文化遗产代表作名录”,跃居世界第一。重视文化遗产的保护是
The number of the students taking part in the English Corner, ______we had expec
The number of the students taking part in the English Corner, ______we had expected, was well above two hundred. A.that                B.like                 C.whom

最新题目