MCQ
Which of the following ions gives coloured solution
- A$C{u^ + }$
- B$Z{n^{ + 2 }}$
- C$A{g^ + }$
- ✓$F{e^{ + 2 }}$
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[Assume : No cyano complex is formed; $K _{ sp }( AgCN )$ $=2.2 \times 10^{-16}$ and $\left. K _{ a }( HCN )=6.2 \times 10^{-10}\right]$
$\Delta U = 2.1\ kcal, \, \Delta S = 20\, cal\, K^{-1}$ at $300\, K$ Hence, $\Delta G$ is ............ $\mathrm{kcal}$
