Q. The rate constant of a first-order reaction with a half-life of 20 minutes is:

20 मिनट के आधे जीवन के साथ प्रथम-क्रम प्रतिक्रिया की दर स्थिरांक है:

0.0347 min⁻¹
0.0347 मिनट⁻¹

0.0693 min⁻¹
0.0693 मिनट⁻¹

0.0231 min⁻¹
0.0231 मिनट⁻¹

0.139 min⁻¹
0.139 मिनट⁻¹

$t_{1/2} = \frac{0.693}{k} \Rightarrow k = \frac{0.693}{20} = 0.0347 \, \text{min}^{-1}$

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