Question

Which of the following is first order ?
i) Decomposition of $N{H}_{4}N{O}_3$ in aqueous solution.
ii) Inversion of cane sugar in the presence of an acid
iii) Base hydrolysis of ethyl acetate.
iv) All radioactive decays.
The correct combination is:

• A. i, ii, iv
• B. All are correct
• C. ii, iv
• D. ii, iii, iv

Answer 1

Answer: (A)

i, ii, iv

Base hydrolysis of ethyl acetate is a second order reaction.
The other reactions are first order reactions.