Which of the following statements is correct about a half-life? a) For a second-order reaction, its half-life is independent of the initial reactant concentration. b) For a first-order reaction, its half-life is dependent on the initial reactant concentration. a) only O b) only Both a) and b) are correct. O Neither a) nor b) is correct

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**Question: Understanding Half-Life in Chemical Reactions**

Which of the following statements is correct about a half-life?

a) For a second-order reaction, its half-life is *independent* of the initial reactant concentration.

b) For a first-order reaction, its half-life is *dependent* on the initial reactant concentration.

- ○ a) only
- ○ b) only
- ○ Both a) and b) are correct.
- ○ Neither a) nor b) is correct

**Explanation:** 

First-order reactions have a half-life that is independent of the initial concentration. In contrast, second-order reactions have a half-life that depends on the initial concentration, decreasing as the concentration decreases.
Transcribed Image Text:**Question: Understanding Half-Life in Chemical Reactions** Which of the following statements is correct about a half-life? a) For a second-order reaction, its half-life is *independent* of the initial reactant concentration. b) For a first-order reaction, its half-life is *dependent* on the initial reactant concentration. - ○ a) only - ○ b) only - ○ Both a) and b) are correct. - ○ Neither a) nor b) is correct **Explanation:** First-order reactions have a half-life that is independent of the initial concentration. In contrast, second-order reactions have a half-life that depends on the initial concentration, decreasing as the concentration decreases.
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