The reaction A → B follows first-order kinetics with a half-life of 21.7 hours. If the concentration of A is 2.23E-2 M after 40.1 hours, what is the initial concentration of A? 0.340 M 6.19E-3 M 3.24E-2 M 8.03E-2 M 0.190 M
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Step 1
The half-life (t1/2) of a first-order reaction can be calculated using the equation: t1/2 = 0.693 / k Given that the half-life is 21.7 hours, we can rearrange the equation to solve for k: k = 0.693 / t1/2 k = 0.693 / 21.7 k = 0.0319 hours^-1 Show more…
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