Question

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

• A. $2S{O}_2\left(g\right)+O_2\left(g\right)\underrightarrow{NO\left(g\right)}2S{O}_3\left(g\right)$
• B. Hydrolysis of aqueous sucrose solution in the presence of a aqueous mineral acid
• C. $2H_2{O}_2\left(l\right)\underrightarrow{Pt\left(s\right)}2H_{2}O\left(l\right)+O_2\left(g\right)$
• D. Hydrolysis of liquid in the presence of aqueous mineral acid

Answer 1

The correct option is C $2H_2{O}_2\left(l\right)\underrightarrow{Pt\left(s\right)}2H_{2}O\left(l\right)+O_2\left(g\right)$

Heterogeneous catalysis is the type of catalysis where the phase of the catalyst differs from the phase of the reactants or products.

It is an example of heterogeneous catalysis reaction.
$2H_2{O}_2\left(l\right)\stackrel{Pt\left(s\right)}{\to }2H_{2}O\left(l\right)+O_2\left(g\right)$

In this reaction, the reactant is in the liquid phase, the catalyst is in the solid phase and the products are in liquid and gas phase.

But in homogeneous catalysis, the reactants, products and catalyst are in one phase. For example, the reactions of the options (A), (B) and (D).

Hence, option C is correct.