Match List-I with List-II

Choose the correct answer from the options given below:

(A)-(II), (B)-(I), (C)-(IV), (D)-(III)

The correct answer is Option (2) → (A)-(II), (B)-(I), (C)-(IV), (D)-(III)

(A) Third order - (II)

Reaction:
2NO(g) + O₂(g) → 2NO₂(g)

Rate law:
Rate = k[NO]²[O₂]

Total order = 2 + 1 = 3 (third order).

(B) First Order - (I)

Reaction:
C₂H₄(g) + H₂(g) → C₂H₆(g)

Hydrogenation reactions on catalyst surfaces often depend on only one reactant concentration, so the rate behaves as first order.

(C) One and half order - (IV)

Reaction:
CHCl₃ + Cl₂ → CCl₄ + HCl

Rate law:
Rate = k[CHCl₃][Cl₂]¹ᐟ²

Total order = 1 + 1/2 = 3/2 (one and half order).

(D) Pseudo first order - (III)

Reaction:
CH₃COOC₂H₅ + H₂O → CH₃COOH + C₂H₅OH

Hydrolysis occurs in large excess of water, so [H₂O] remains almost constant. Thus the reaction behaves as pseudo first order.