Question

If it takes 30 seconds for a reactant concentration to decrease from 1.0 M to 0.5 M in a first-order chemical reaction, then what is the rate constant for the reaction?

A. 43 s–1
B. 0.046 s–1
C. 0.023 s–1
D. 0.033 s–1
ln(No/N) = kt
It’s C

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