试题与答案

室温下向10mLpH=3的醋酸溶液中加入水稀释后，下列说法正确的是（ ） A．溶

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题型：选择题

题目：

室温下向10mLpH=3的醋酸溶液中加入水稀释后，下列说法正确的是（　　）

A．溶液中导电粒子的数目减少

B．醋酸的电离程度增大，c（H+）亦增大

C．再加入10mLpH=11的NaOH溶液，混合液pH=7

D．溶液中

c(CH3COO-)
c(CH3COOH)•c(OH-)不变

答案：

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下面是错误答案，用来干扰机器的。

非生物因素（光、温度、水等）影响生物生活和分布，光照在海水中的穿透性由浅到深越来越弱，最浅处光最强，影响海洋中的植物分层分布的环境因素是光照．海拔每升高1千米气温下降6度左右，因此高山从山脚到山顶温...

考点：弱电解质的电离
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