At 25oC the solubility of Ag2CO3 (Ksp=4.3×10−13) would be in what order in the following solutions?
A
0.01MAgNO3
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B
0.04MK2CO3
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C
pure water
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D
in a buffer (pH=4)
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Solution
The correct option is C pure water Ag2CO3⇌Ag++CO23 In AgNO3 , there is Ag+ion, and in K2CO3 there is CO2−3 ion, due to common ion effect Solubility decreases. In pure water solubility is maximum. (C) is correct option.