已知在25℃时，FeS、CuS的溶度积常数(Ksp)分别为6.3×10－18、1.3×10－36.常温时下列有关说法正确的是_刷题宝

题干

已知在25℃时，FeS、CuS的溶度积常数(K_sp)分别为6.3×10^－¹⁸、1.3×10^－³⁶.常温时下列有关说法正确的是（）

A：向H₂S的饱和溶液中通入少量SO₂气体溶液的酸性增强

B：将足量的CuSO₄溶解在0.1 mol/L的H₂S溶液中，溶液中Cu²^＋的最大浓度为1.3×10^－³⁵ mol/L

C：因为H₂SO₄是强酸，所以反应：CuSO₄＋H₂S=CuS↓＋H₂SO₄不能发生

D：除去工业废水中的Cu²^＋可以选用FeS作沉淀剂

上一题下一题 0.0难度选择题更新时间:2011-04-06 02:35:59

答案(点此获取答案解析）

D

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