The half-life period of a first-order chemical reaction is 6.93 minutes. The time required for the completion of 99.9% of the chemical reaction will be:
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Answer:
the time required for 99% completion of the reaction is 46.06 min.
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The half life period t
1/2
=6.93 min.
The decay constant λ=
t
1/2
0.693
=
6.93min
0.693
=0.1/min
t=
λ
2.303
log
a−x
a
t=
0.1/min
2.303
log
100−99
100
t=46.06min
Hence, the time required for 99.9% completion of the reaction is 46.08 min approx
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