Q67 / 160 · JIPMER 2012 · Chemistry

Moist hydrogen peroxide can not be dried over conc. $\mathrm{H}_2 \mathrm{SO}_4$ because

  • A
    it can catch fire
  • B
    it is reduced by $\mathrm{H}_2 \mathrm{SO}_4$
  • C
    it is oxidised by $\mathrm{H}_2 \mathrm{SO}_4$
  • Correct answer
    D
    it is decomposed by $\mathrm{H}_2 \mathrm{SO}_4$

Solution

Conc. $\mathrm{H}_2 \mathrm{SO}_4$ decomposes $\mathrm{H}_2 \mathrm{O}_2$, thus $\mathrm{H}_2 \mathrm{O}_2$ can not be dried over it. $\mathrm{H}_2 \mathrm{O}_2+[\mathrm{O}] \longrightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2$

Hence, the correct answer is option: 'D'.

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