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What is the solubility product expression for silver chromate dissolving in water?

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What is the solubility product expression for silver chromate dissolving in water?

(a) [2Ag^+][2CrO4^2-]

(b) [Ag^+]^2 [Cr2O7^2-]^2

(c) [Ag^+]^2 [Cr2O4^2-]^2

(d) [Ag^+]^2 [CrO4^2-]^2

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This is a very interesting question from Solubility Solutions topic in section Solutions of Chemistry – Class 12

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Correct answer is (d) [Ag^+]^2 [CrO4^2-]^2

Explanation: The formula for silver chromate is Ag2CrO4. On the other hand, silver dichromate is formulated as Ag2Cr2O7. If a compound is represented as AXBY then the solubility product expression is written in terms of its molar concentration as [A^+]^X [B^–]^Y. Similarly, the solubility product expression for Ag2CrO4 is given as [Ag^+]^2 [CrO4^2-]^2.

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