🧪 Chemistry · Chemical Kinetics · NEET & JEE

For rate = k[A][B], if [A] doubles and [B] is halved, the rate:

Answer: Stays the same.

A Doubles
B Halves
C Stays the same
D Quadruples

Correct answer: C. Stays the same

Explanation: Rate = k × (2[A]) × (½[B]) = k[A][B] = unchanged. The two changes cancel each other.

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 rate = k[A][B], if [A] doubles and [B] is halved, the rate:

Concept context

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