Question

For which of the following reactions the molecularity and orders of the reaction are two and two respectively:

• A. ester hydrolysis in acid medium.
• B. inversion of cane sugar in acid aqueous solution.
• C. hydrolysis of ethyl acetate in caustic soda aqueous solution.
• D. decomposition hydrogen peroxide in acid solution.

Answer 1

The correct option is C hydrolysis of ethyl acetate in caustic soda aqueous solution.

The hydrolysis of ethyl acetate in caustic soda aqueous solution is represented by the following reaction.
$C{H}_{3}COO{C}_2{H}_5+NaOH\to C{H}_{3}COONa+C_2{H}_{5}OH$
The expression for the rate of the reaction is $r=k\left[C{H}_{3}COO{C}_2{H}_5\right]\left[NaOH\right].$
The overall order of the reaction is 2 and it is a bimolecular reaction.