🧪 Chemistry · Chemical Kinetics · NEET & JEE

For a zero-order reaction A → B with [A]₀ = 0.5 M and k = 0.05 M/s, total reaction time is:

Answer: 10 s.

A 10 s
B 5 s
C 0.1 s
D 20 s

Correct answer: A. 10 s

Explanation: For zero-order: t = [A]₀/k = 0.5/0.05 = 10 s. The reaction goes to completion at this time.

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 zero-order reaction A → B with [A]₀ = 0.5 M and k = 0.05 M/s, total reaction time is:

Concept context

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