Question

The rate of oxidation of oxalic acid by acidified potassium permanganate is shown in the given graph.

$5 \mathrm { H } _ { 2 } \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } + 2 \mathrm { KMnO } _ { 4 } \rightarrow$ $\quad 2 \mathrm { MnSO } _ { 4 } + \mathrm { K } _ { 2 } \mathrm { SO } _ { 4 } + 10 \mathrm { CO } _ { 2 } + 8 \mathrm { H } _ { 2 } \mathrm { O }$

The type of catalysis shown by such reactions is

• A. (a) Heterogeneous catalysis
• A. (b) Induced catalysis
• A. (c) Auto – catalysis
• A. (d) Negative catalysis.

Answer 1

(c)

Sol. It these reactions, one of the products formed acts as a catalyst and thus accelerate the rate of reactions.