What will be the order of a reaction if its rate is expressed as

Rate = $k[A]^{1/2}[B]^{3/2}$

2

The correct answer is Option (1) → 2

Core concept

Order of reaction = sum of powers of concentration terms in rate law.

Stepwise Calculation

Rate = k [A]¹ᐟ² [B]³ᐟ²

Order with respect to A = 1/2

Order with respect to B = 3/2

Total Order

Total order = 1/2 + 3/2

Total order = 4/2

Total order = 2