MCQ
${H_2}S$ react with ${O_2}$ to form
- ✓${H_2}O + S$
- B${H_2}O + S{O_2}$
- C${H_2}O + S{O_3}$
- D${H_2}S{O_4} + S$
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$2 \mathrm{Fe}^{3+}(\mathrm{aq})+2 \mathrm{I^-}(\mathrm{aq}) \rightarrow 2 \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{I}_{2}(\mathrm{aq})$
$\mathrm{E}_{\text {call }}^{\mathrm{e}}=0.24 \mathrm{V}$ 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} $]
| $(A)$ | $OSF_2$ | $OSCl_2$ | $OSBr_2$ |
| $(B)$ | $SbCl_3$ | $SbBr_3$ | $SbI_3$ |
| $(C)$ | $PI_3$ | $AsI_3$ | $SbI_3$ |