JEE Main Chemistry question

0.759 g of a silver salt of a dibasic organic acid, on ignition, left 0.463 g of metallic silver. The equivalent weight of the acid is:

Answer: (A)

Solution

For a dibasic acid H₂A, the silver salt is Ag₂A. Moles Ag = 0.463/108 = 4.287 × 10⁻³, so moles Ag₂A = 2.1435 × 10⁻³. Molar mass of salt =

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Question ID VK-149594