MCQ
When Conc. $H_2SO_4$ is added to charcoal :-
- AThere is no reaction
- BWater gas is formed
- ✓$SO_2$ and $CO_2$ are evolved
- D$CO$ and $SO_2$ are evolved
✓
Answer
Correct option: C.
$SO_2$ and $CO_2$ are evolved
c
To a piece of charcoal sulfuric acid is added. Then $\mathrm{CO}_{2}$ and $\mathrm{SO}_{2}$ are evolved.
To a piece of charcoal sulfuric acid is added. Then $\mathrm{CO}_{2}$ and $\mathrm{SO}_{2}$ are evolved.
$\mathrm{C}+2 \mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{CO}_{2} \uparrow+2 \mathrm{SO}_{2} \uparrow+2 \mathrm{H}_{2} \mathrm{O}$
$\mathrm{H}_{2} \mathrm{SO}_{4}$ is reduced to $\mathrm{SO}_{2}$ and $\mathrm{C}$ is oxidised to $\mathrm{CO}_{2}$
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