The reaction A → B follows first-order kinetics with a half-life of 21.7 hours. If the concentration of A is 0.023 M after 48.0 hours, what is the initial concentration of A? a. 0.0050 M b. 0.051 M c. 0.51 M d. 0.11 M e. 2.0 × 10^2 M
Added by Emily J.
Step 1
693/k, where k is the rate constant. We can rearrange this equation to solve for k: k = 0.693/t1/2 = 0.693/21.7 hours = 0.0319 hours^-1. Show more…
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