Q21 / 60 · IAT (IISER) 2020 · Chemistry

A first-order reaction is found to have a half-life of one second (sec). What will be the time required for 99.9 \% completion of the reaction?

A
0.693 sec
B
2 sec
Correct answer
C
10 sec
D
69.3 sec

Hence, the correct answer is option: 'C'.

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