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If the rate of a reaction is given by rate = k[A]², what is the order of the rea

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Question: If the rate of a reaction is given by rate = k[A]², what is the order of the reaction? (2021)

Options:

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

Correct Answer: Second

Solution: 

The reaction is second-order because the rate depends on the square of the concentration of A.

If the rate of a reaction is given by rate = k[A]², what is the order of the rea

Practice Questions

Q1
If the rate of a reaction is given by rate = k[A]², what is the order of the reaction? (2021)
  1. Zero
  2. First
  3. Second
  4. Third

Questions & Step-by-Step Solutions

If the rate of a reaction is given by rate = k[A]², what is the order of the reaction? (2021)
  • Step 1: Identify the rate equation given, which is rate = k[A]².
  • Step 2: Look at the exponent of the concentration term [A]. In this case, the exponent is 2.
  • Step 3: Understand that the order of a reaction is determined by the sum of the exponents in the rate equation.
  • Step 4: Since the exponent of [A] is 2, the reaction is second-order.
  • Step 5: Conclude that the order of the reaction is 2.
  • Reaction Order – The order of a reaction is determined by the exponent of the concentration term in the rate law expression.
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