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What is the rate law for a reaction that is first order with respect to A and se

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Question: What is the rate law for a reaction that is first order with respect to A and second order with respect to B? (2022) 2022

Options:

  1. Rate = k[A][B]^2
  2. Rate = k[A]^2[B]
  3. Rate = k[A]^2[B]^2
  4. Rate = k[A][B]

Correct Answer: Rate = k[A][B]^2

Exam Year: 2022

Solution: 

The rate law is determined by the order of the reaction with respect to each reactant. For first order in A and second order in B, the rate law is Rate = k[A][B]^2.

What is the rate law for a reaction that is first order with respect to A and se

Practice Questions

Q1
What is the rate law for a reaction that is first order with respect to A and second order with respect to B? (2022) 2022
  1. Rate = k[A][B]^2
  2. Rate = k[A]^2[B]
  3. Rate = k[A]^2[B]^2
  4. Rate = k[A][B]

Questions & Step-by-Step Solutions

What is the rate law for a reaction that is first order with respect to A and second order with respect to B? (2022) 2022
  • Step 1: Identify the order of the reaction with respect to each reactant. In this case, it is first order with respect to A and second order with respect to B.
  • Step 2: Write the general form of the rate law, which is Rate = k[A]^m[B]^n, where m is the order with respect to A and n is the order with respect to B.
  • Step 3: Substitute the values of m and n into the rate law. Here, m = 1 (first order for A) and n = 2 (second order for B).
  • Step 4: The rate law becomes Rate = k[A]^1[B]^2.
  • Step 5: Simplify the expression. Since [A]^1 is just [A], the final rate law is Rate = k[A][B]^2.
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