Doubling the concentration of reactant A quadruples the rate of a reaction. What is the order with respect to A?

Answer and explanation

Correct answer: B. Second order

  1. Step 1: Rate , so doubling gives a factor . Step 2. gives . Answer: Second order. Why not the others: First order would double the rate; zero order leaves it unchanged; third order would multiply it by 8.

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Doubling the… | Wazari Exam (Iraq Baccalaureate) - Scientific Branch