用A、B两根石墨棒作电极电解AgNO3溶液,通电t min时,在B极上共产生11

AB两根石墨棒作电极电解AgNO3溶液,通电t min时,在B极上共产生11.2 mL(标准状况下)气体。最终溶液的体积为200 mL,则该溶液的pH接近于(   

A.4         B.2.7          C.3             D.2

答案

D

相关题目

下列所示的黏性末端是由几种限制性内切酶作用产生的 A.1
下列所示的黏性末端是由几种限制性内切酶作用产生的 A.1种                              B.2种                     C.3种   
(10分)已知:①A 是一种分子量为28的气态烃; ②2CH3CHO+O22CH3COO
(10分)已知:①A 是一种分子量为28的气态烃; ②2CH3CHO+O22CH3COOH现以A为主要原料合成一种具有果香味的物质E,其合成路线如下图所示。回答下列问题(1)写
This question is ______ easy, all the students can answer it.         A.
This question is ______ easy, all the students can answer it.         A. too much         B. too many    C. much too    D. many too
      When I told my father that I was moving to Des Moines,Iowa, he told m
      When I told my father that I was moving to Des Moines,Iowa, he told me about the only time he had been there. It was in the 1930s, when he was an editor of the literary magazine of Souther
穆罕默德·阿里改革的必然性是(  ) ①埃及面临着英国等
穆罕默德·阿里改革的必然性是(  ) ①埃及面临着英国等西方资本主义国家侵略的威胁 ②埃及经济落后、国力衰弱,无力抵抗外来入侵 ③马木鲁克反
完型填空     阅读下面短文,掌握其大意,从每题所给的A
完型填空     阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中,选出最佳选项。 “Keep your eye on your paper” is one of the rules that Mrs Archer
α1和α2分别为A、B在两个恒容容器中平衡体系A(g)2B(g)和2A(g)B(g)
α1和α2分别为A、B在两个恒容容器中平衡体系A(g)2B(g)和2A(g)B(g)的转化率,在温度不变的情况下,均增加A的物质的量,下列判断正确的是 A.α1、α2均减小

最新题目