MCQ
The correct nomenclature for $F{e_4}{[Fe{(CN)_6}]_3}$ is
- AFerroso-ferric cyanide
- BFerric-ferrous hexacyanate
- ✓Iron $(III)$ hexacyanoferrate $ (II)$
- DHexacynoferrate $ (III-II)$
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Correct order of $pK _{ a }$ value is:

$A \to B$ ${k_1} = {10^{15}}{e^{ - 25000/8.34\,T}}$
$C \to D$ ${k_2} = {10^{14}}{e^{ - 15000/8.34\,T}}$
Calculate the approximate temperature at which $k_1 = k_2$ ...... $K$