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Which of the following is a characteristic of a first-order reaction?

Practice Questions

Q1
Which of the following is a characteristic of a first-order reaction?
  1. Rate is proportional to the square of the concentration
  2. Rate is independent of concentration
  3. Rate is directly proportional to concentration
  4. Rate is inversely proportional to concentration

Questions & Step-by-Step Solutions

Which of the following is a characteristic of a first-order reaction?
  • Step 1: Understand what a first-order reaction is. It is a type of chemical reaction.
  • Step 2: Know that in a first-order reaction, the speed (rate) of the reaction depends on how much of the reactant is present.
  • Step 3: Remember that 'directly proportional' means if you increase the amount of reactant, the rate of the reaction increases in a predictable way.
  • Step 4: Conclude that the key characteristic of a first-order reaction is that its rate changes directly with the concentration of the reactant.
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