Q7 / 160 · TS EAMCET 2005 · Chemistry

Which one of the following reactions does not form gaseous product?

  • A
    $\mathrm{PbO}_2+\mathrm{H}_2 \mathrm{O}_2 \longrightarrow$
  • B
    Acidified $\mathrm{KMnO}_4+\mathrm{H}_2 \mathrm{O}_2 \longrightarrow$
  • Correct answer
    C
    $\mathrm{PbS}+\mathrm{H}_2 \mathrm{O}_2 \longrightarrow$
  • D
    $\mathrm{Cl}_2+\mathrm{H}_2 \mathrm{O}_2 \longrightarrow$

Solution

Hydrogen peroxide oxidise lead sulphide into lead sulphate which is a solid. $\mathrm{PbS}+4 \mathrm{H}_2 \mathrm{O}_2 \longrightarrow \mathrm{PbSO}_4+4 \mathrm{H}_2 \mathrm{O}$

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

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