Consider the following equilibrium; \[ \mathrm{AgCl} \downarrow+2 \mathrm{NH}_{3} \rightleftharp...

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Consider the following equilibrium;
\[
\mathrm{AgCl} \downarrow+2 \mathrm{NH}_{3} \rightleftharpoons\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]^{+}+\mathrm{Cl}^{-}
\]
White ppt. of \( \mathrm{AgCl} \) appears on adding:
(a) \( \mathrm{NH}_{3} \)
(b) aq. \( \mathrm{NaBr} \)
(c) aq. \( \mathrm{HNO}_{3} \)
(d) aq. \( \mathrm{NH}_{4} \mathrm{I} \)
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