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Question: The rate constant for a first order reaction whose half-life, is 480 seconds is –...

The rate constant for a first order reaction whose half-life, is 480 seconds is –

A

2.88 × 10–3 sec–1

B

2.72 × 10–3 sec–1

C

1.44 × 10–3 sec–1

D

1.44 sec–1

Answer

1.44 × 10–3 sec–1

Explanation

Solution

K = 0.693t1/2=0.693480\frac{0.693}{t_{1/2}} = \frac{0.693}{480} = 1.44 × 10–3 sec–1