下列有关溶液中微粒的物质的量浓度关系正确的是_刷题宝

题干

下列有关溶液中微粒的物质的量浓度关系正确的是（）

A：某弱酸的酸式盐NaHA溶液中一定有：c（OH^﹣）+2c（A²^﹣）=c（H⁺）+c（H₂A）

B：0.2 mol•L^﹣1 CH₃COONa溶液与0.1 mol•L^﹣1盐酸等体积混合后的酸性溶液中：＞c（CH₃COO^﹣）＞c（CH₃COOH）＞c（Cl^﹣）＞c（H⁺）

C：室温下，向100ml0.5mol/L的Na₂CO₃溶液中加入0.05molCaO，溶液中增大 $\frac{c (O H^{-})}{c (H C_{3}^{-})}$

D：0.1 mol•L^﹣1（NH₄）₂Fe（SO₄）₂溶液中：c（NH₄⁺）+c（NH₃•H₂O）+c（Fe²⁺）=0.3 mol•L^﹣1

上一题下一题 0.0难度选择题更新时间:2018-09-03 05:31:40

答案(点此获取答案解析）

C

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