🧪 Chemistry · Chemical Kinetics · NEET & JEE

For a reaction A → products, doubling [A] quadruples the rate. The order with respect to A is:

Answer: 2.

Correct answer: B. 2

Explanation: rate ∝ [A]ⁿ; if doubling gives a fourfold rise then 2ⁿ = 4, so n = 2.

First-order decay curve: concentration halves every t½, and that half-life is constant - a defining test for first-order kinetics.

Concept context

Study the speed of reactions and what affects it: concentration, temperature, and catalysts. Covers rate law, order of reaction, the Arrhenius equation, and reaction mechanisms step by step.

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For a reaction A → products, doubling [A] quadruples the rate. The order with respect to A is:

Concept context

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