MCQ
Aqua regia is a mixture of
- ✓$3HCl + 1HN{O_3}$
- B${H_3}P{O_4} + {H_2}S{O_4}$
- C$3HN{O_3} + 1HCl$
- D$HCl + C{H_3}COOH$
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Propanal, Benzaldehyde, Propanone, Butanone

$2 \mathrm{Fe}^{3+}(\mathrm{aq})+2 \mathrm{I^-}(\mathrm{aq}) \rightarrow 2 \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{I}_{2}(\mathrm{aq})$
$\mathrm{E}_{\text {call }}^{\mathrm{e}}=0.24 \mathrm{V}$ at $298\; \mathrm{K}$. The standard Gibbs energy $\left( {{\Delta _r}{{\rm{G}}^ \ominus }} \right)$ of the cell reaction is:
[Faraday constant $\mathrm{F}=96500 \;\mathrm{C} \mathrm{mol}^{-1} $]