Q8 / 160 · TS EAMCET 2005 · Chemistry

Which of the following is an example for heterogeneous catalysis reaction?

  • A
    $2 \mathrm{SO}_2(g)+\mathrm{O}_2(g) \stackrel{\mathrm{NO}(g)}{\longrightarrow} 2 \mathrm{SO}_3(g)$
  • B
    Hydrolysis of aqueous sucrose solution in the presence of aqueous mineral acid
  • Correct answer
    C
    $2 \mathrm{H}_2 \mathrm{O}_2(\mathrm{l}) \stackrel{\mathrm{Pt}(\mathrm{s})}{\longrightarrow} 2 \mathrm{H}_2 \mathrm{O}(l)+\mathrm{O}_2(\mathrm{~g})$
  • D
    Hydrolysis of liquid in the presence of aqueous mineral acid

Solution

$2 \mathrm{H}_2 \mathrm{O}_2(l) \stackrel{\mathrm{Pt}(\mathrm{s})}{\longrightarrow} 2 \mathrm{H}_2 \mathrm{O}(l)+\mathrm{O}_2(\mathrm{~g})$ In this reaction, reactant and catalyst are in different phase, hence it is an example of heterogeneous catalysis.

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

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