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Question

What is the minimum concentration of Ba+2 ions required in order to initiate the precipitation of BaSO4 from a solution containing 0.002 mol L1 of SO24 ions?
(Given Ksp for BaSO4=1.4×1010 )

A
1.7×107 M
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B
2.7×107 M
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C
7.0×108 M
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D
7.0×1010 M
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