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向含有等摩尔CrO42-和SO42-的混合溶液中,逐滴加入Pb(NO3)2溶液,下列说法正确的是:()(已知K°sp(PbCrO4)=2.0*10-16,K°sp(PbSO4)=2.0*10-8)
- A、PbCrO4首先沉淀。当PbCrO4沉淀完全后,PbSO4才沉淀;
- B、PbSO4先沉淀,然后PbSO4和PbCrO4共沉淀;
- C、PbSO4和PbCrO4共沉淀;
- D、PbSO4先沉淀,后转变为PbCrO4沉淀。
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更多 “ 向含有等摩尔CrO42-和SO42-的混合溶液中,逐滴加入Pb(NO3)2溶液,下列说法正确的是:()(已知K°sp(PbCrO4)=2.0*10-16,K°sp(PbSO4)=2.0*10-8)A、PbCrO4首先沉淀。当PbCrO4沉淀完全后,PbSO4才沉淀;B、PbSO4先沉淀,然后PbSO4和PbCrO4共沉淀;C、PbSO4和PbCrO4共沉淀;D、PbSO4先沉淀,后转变为PbCrO4沉淀。” 相关考题
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