MCQ
Which of the following complex represent maximum stability ?
- ✓$[Co(CN)_6]^{3-}$
- B$[Co(H_2O)_6]^{3+}$
- C$[Co(CN)_6]^{4-}$
- D$[Co(C_2O_4)_3]^{3-}$
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$(A)$ $P$ can be reduced to a primary alcohol using $NaBH _4$.
$(B)$ Treating $P$ with conc. $NH _4 OH$ solution followed by acidification gives $Q$.
$(C)$ Treating $Q$ with a solution of $NaNO _2$ in aq. $HCl$ liberates $N _2$.
$(D)$ $P$ is more acidic than $CH _3 CH _2 COOH$.
$A \rightarrow B; \ \ \ K_1 = 10^{15}\ exp.\ \left( {\frac{{ - 2000}}{T}} \right)$
$C \rightarrow D;\ \ \ K_2 = 10^{14}\ exp. \ \left( {\frac{{ - 1000}}{T}} \right)$
The temperature at which $K_1 = K_2$ is ........... $K$ ($exp. = e$)