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The rate of a reaction is given by the equation rate = k[A]^2[B]. What is the ov

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Question: The rate of a reaction is given by the equation rate = k[A]^2[B]. What is the overall order of the reaction? (2020)

Options:

  1. 1
  2. 2
  3. 3
  4. 4

Correct Answer: 3

Exam Year: 2020

Solution:

The overall order of the reaction is 2 (from [A]^2) + 1 (from [B]) = 3.

The rate of a reaction is given by the equation rate = k[A]^2[B]. What is the ov

Practice Questions

Q1
The rate of a reaction is given by the equation rate = k[A]^2[B]. What is the overall order of the reaction? (2020)
  1. 1
  2. 2
  3. 3
  4. 4

Questions & Step-by-Step Solutions

The rate of a reaction is given by the equation rate = k[A]^2[B]. What is the overall order of the reaction? (2020)
  • Step 1: Identify the rate equation given, which is rate = k[A]^2[B].
  • Step 2: Look at the exponent of [A], which is 2. This means that [A] contributes 2 to the overall order.
  • Step 3: Look at the exponent of [B], which is 1 (since it is not shown, it is understood to be 1). This means that [B] contributes 1 to the overall order.
  • Step 4: Add the contributions from [A] and [B] together: 2 (from [A]) + 1 (from [B]) = 3.
  • Step 5: Conclude that the overall order of the reaction is 3.
  • Reaction Rate Law – The rate of a chemical reaction is expressed as a function of the concentration of reactants, with each concentration raised to a power that reflects its contribution to the reaction rate.
  • Order of Reaction – The overall order of a reaction is the sum of the powers of the concentration terms in the rate law, indicating how the rate is affected by the concentration of reactants.
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