The reaction A → products is first order. If the initial concentration of A is 0.646 M and, after 72.8 seconds have elapsed, the

Question

evablogger [386]

3 years ago

13

The reaction A → products is first order. If the initial concentration of A is 0.646 M and, after 72.8 seconds have elapsed, the

concentration of A has fallen to 0.0146 M, what is the rate constant of the reaction?

Chemistry

1 answer:

mario62 [17] · Answer 1 · 2022-03-14T00:54:42+03:00

Answer: 0.00867 moldm-3

Explanation:

Since the reaction is 1st order,

Rate of reaction=∆[A]÷t

0.646-0.0146/72.8= 0.00867

Remember that in a first order reaction, the rate of reaction depends on change in the concentration of only one of the reaction species, A in the problem above.