TS EAMCET · Chemistry · Electrochemistry

Which is the correct equation for the reaction of $AgCl$ with ${NH}_{4} OH ?$

A $AgCl + {NH}_{4} OH \to AgOH + {NH}_{4}^{+} + {Cl}^{-}$
B $AgCl + 2 {NH}_{4} OH \to {[Ag {({NH}_{3})}_{2}]}^{+} + {Cl}^{-} + 2 H_{2} O$
C $AgCl + 4 {NH}_{4} OH \to {[Ag {({NH}_{3})}_{4}]}^{+} + {Cl}^{-} + 4 H_{2} O$
D $2 AgCl + {NH}_{4} OH \to {Ag}_{2} O + {NH}_{4}^{+} + H^{+} + 2 {Cl}^{-}$

Verified Solution

Answer & Solution

Correct Answer

(B) $AgCl + 2 {NH}_{4} OH \to {[Ag {({NH}_{3})}_{2}]}^{+} + {Cl}^{-} + 2 H_{2} O$

Step-by-step Solution

Detailed explanation

Reaction of AgCl with NH4OH is a complexation reaction. AgCl+2NH4OH→AgNH32++Cl-+2H2O AgCl is white colour water insoluble compound but in the presence of NH3 its solubility increase due to formation of complex Ag(NH3)2+. [Ag(NH3)2]Cl is the formed complex.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Which is the correct equation for the reaction of AgCl with NH4OH?

Step-by-step Solution

Which is the correct equation for the reaction of $AgCl$ with ${NH}_{4} OH ?$