Which of the following sulfates is least soluble in water?
A) BaSO4; K sp = 1.1×10 - 10
B) CaSO4; K sp = 2.4×10 - 5
C) PbSO4; K sp = 1.6×10 - 8
D) RaSO4; K sp = 2.0×10 - 11
E) SrSO4; K sp = 3.2×10 - 7
Correct Answer:
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