已知:25℃时,电离常数,溶度积常数 现向110.2 mol·L-1HF溶液中加入

已知:25℃时,电离常数,溶度积常数

现向1102 mol·L-1HF溶液中加入1L02 mo·L-l CaCl2溶液,则下列说法中正确的是                                                                          

       A25℃时,01 molL-l HF溶液的pH=l                             

       B随温度和浓度的变化而变化

      C.该体系中有CaF2沉淀产生              

       D.升高温度,将变小

答案

C

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