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JEE Main Chemistry question

ChemistryElectrochemistryJEE Main

A current of ampere was passed for second through three cells , and connected in series, containing respectively silver nitrate, mercuric nitrate and mercurous nitrate. At the cathode of cell , 0.216 g of Ag was deposited (at. wt. Ag , Hg ). The weights of mercury deposited at the cathodes of and respectively are

Answer: (C)

Solution

Equivalents of Ag deposited eq; being in series, the same 0.002 equivalents of charge pass through and . In (mercuric, , per Hg atom): eq. wt. , mass

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Question ID VK-143965