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The rate of a reaction is directly proportional to the concentration of one reac

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Question: The rate of a reaction is directly proportional to the concentration of one reactant raised to the power of 2. What is the order of the reaction? (2022)

Options:

  1. Zero order
  2. First order
  3. Second order
  4. Third order

Correct Answer: Second order

Exam Year: 2022

Solution: 

If the rate is proportional to the concentration of one reactant raised to the power of 2, the reaction is second order.

The rate of a reaction is directly proportional to the concentration of one reac

Practice Questions

Q1
The rate of a reaction is directly proportional to the concentration of one reactant raised to the power of 2. What is the order of the reaction? (2022)
  1. Zero order
  2. First order
  3. Second order
  4. Third order

Questions & Step-by-Step Solutions

The rate of a reaction is directly proportional to the concentration of one reactant raised to the power of 2. What is the order of the reaction? (2022)
  • Step 1: Understand that the rate of a reaction can depend on the concentration of reactants.
  • Step 2: Identify that the question states the rate is directly proportional to the concentration of one reactant.
  • Step 3: Note that the concentration of the reactant is raised to the power of 2.
  • Step 4: Recognize that when the concentration of a reactant is raised to the power of 2, it indicates that the reaction is second order with respect to that reactant.
  • Step 5: Conclude that since the rate is proportional to the concentration squared, the overall order of the reaction is second order.
  • Reaction Order – The order of a reaction indicates how the rate is affected by the concentration of reactants, with the exponent representing the order.
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