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JEE Main 2014 Chemistry question

ChemistryEquilibriumJEE Main 2014

Consider the following equilibrium AgCl\downarrow + 2NH_3 \rightleftharpoons \left[Ag(NH_3)_2\right]^+ + Cl^-. White precipitate of AgCl appears on adding which of the following?

Answer: (3)

Solution

Nitric acid protonates the ammonia to , removing it from the solution. By Le Chatelier's principle the equilibrium shifts to the left to replace the lost ammonia, so

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Question ID VK-104474