Which of the following reaction depicts oxidizing behaviour of H_… - Vidyadip

MCQ

Which of the following reaction depicts oxidizing behaviour of $H_2SO_4$ ?

A
$Ca(O{H_2}) + {H_2}S{O_4} \to CaS{O_4} + 2{H_2}O$
B
$NaCl + {H_2}S{O_4} \to NaHS{O_4} + HCl$
C
$2PC{l_5} + {H_2}S{O_4} \to 2POC{l_3} + 2HCl + S{O_2}C{l_2}$
✓
$2HI + {H_2}S{O_4} \to {I_2} + S{O_2} + 2{H_2}O$

✓

Answer

Correct option: D.

$2HI + {H_2}S{O_4} \to {I_2} + S{O_2} + 2{H_2}O$

d
$2 \mathrm{HI}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{I}_{2}+\mathrm{SO}_{2}+2 \mathrm{H}_{2} \mathrm{O}$

In this reaction the oxidation state of I increases by 1 hence, this is oxidation reaction and $\mathrm{HI}$ behaves as the reducing agent.

Also, the oxidation state of sulphur is decreasing by 2 means this is a reduction reaction and $\mathrm{H}_{2} \mathrm{SO}_{4}$ behaves as an oxidizing agent

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