Question

Identify the autocatalytic reaction from the following:

• A. \( N_2 + 3H_2 \xrightarrow{\text{Fe, Mo}} 2NH_3 \)
• B. \( 2KClO_3 \xrightarrow{\text{MnO}_2} 2KCl + 3O_2 \)
• C. \( CH_3COOC_2H_5 + H_2O \rightarrow CH_3COOH + C_2H_5OH \)
• D. \( AgNO_3 + KCl \rightarrow AgCl + KNO_3 \)

Hint:

In an autocatalytic reaction, one of the reaction products acts as a catalyst, speeding up further reaction.

Answer 1

The Correct Option is C

Step 1: Understanding Autocatalysis
Autocatalysis is a reaction where one of the products acts as a catalyst for the same reaction, thereby increasing its rate. 

Step 2: Examining the Given Reactions Among the given reactions:
- Reaction (1) is the Haber process, catalyzed by iron and molybdenum, but not autocatalytic. 
- Reaction (2) is the decomposition of potassium chlorate, catalyzed by manganese dioxide, not autocatalytic. 
- Reaction (3) is hydrolysis of ethyl acetate, where the acetic acid (\( CH_3COOH \)) formed catalyzes further hydrolysis. 
- Reaction (4) is a simple precipitation reaction and not autocatalytic. 

Step 3: Conclusion Since acetic acid acts as a catalyst in the hydrolysis reaction, it is an example of an autocatalytic reaction.