Question

Half life period of the first order reaction is to 15 minutes. calculate the time required for 90% completion​

Answer 1

Answer:

3.3 times that of half time.

Explanation:

For a first order reaction,

k=t2.303loga−xa

t=0.6932.303×t1/2log(100−90)100[∵k=0.693t1/2]

=0.6932.303×t1/2log10

=3.3t1/2

=3.3 times that of half-life.

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