Consider: (i) acid hydrolysis of an ester in aqueous HCl, (ii) decomposition of H2O2 on Pt black, (iii) oxidation of SO2 with NO in the lead chamber, (iv) hydrogenation of ethene on Ni, (v) oxidation of SO2 over V2O5. The number of heterogeneously catalysed reactions is

JEE Main levelSingle correct optionDifficulty 2 of 3sc068

Consider: (i) acid hydrolysis of an ester in aqueous HCl, (ii) decomposition of $H X_{2} O X_{2}$ on Pt black, (iii) oxidation of $SO X_{2}$ with NO in the lead chamber, (iv) hydrogenation of ethene on Ni, (v) oxidation of $SO X_{2}$ over $V X_{2} O X_{5}$ . The number of heterogeneously catalysed reactions is

Heterogeneous catalysis has the catalyst in a phase different from the reactants: (ii) Pt black solid in liquid, (iv) Ni solid with gases, (v)

V X_{2} O X_{5}

solid with gases. (i) and (iii) are homogeneous, so the count is 3.