For a first-order chemical reaction with rate constant k = 0.0693 min⁻¹, what is the half-life of the reaction?
Answer and explanation
Correct answer: C. 10 min
- Step 1: Recall the half-life formula for a first-order reaction: .
- Step 2: Compute: .
Answer
10 min.
Why not the others: 5.0 min halves the correct result; 20 min doubles the half-life; 15 min is an incorrect estimate.
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