JEE Chemistry - MCQ Practice Questions

The integrated rate law for second-order reaction is 1/[A] = 1/[A]₀ + kt. If [A]₀ = 0.5 M, k = 0.4 M⁻¹s⁻¹, find [A] after 5 seconds

The half-life of a second-order reaction is 100 s when initial concentration is 0.5 M. What is the rate constant?