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JEE Main Chemistry question

ChemistryEquilibriumJEE Main

An aqueous solution contains , and ions at equal concentrations. The solubility products of , and in water at 25°C are , and , respectively. Indicate which of these ions will be precipitated first and last when sulphide concentration is progressively increased from zero? [J & K CET 2008]

Answer: (D)

Solution

The salt with the smallest reaches saturation first; (,

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Question ID VK-135678