Chemical Engineering - Chemical Reaction Engineering - Discussion
Discussion Forum : Chemical Reaction Engineering - Section 6 (Q.No. 43)
43.
Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.
Discussion:
3 comments Page 1 of 1.
Mbhuyan said:
5 years ago
In case of fist order reaction:
Time taken for 75% completion=time taken for 2*50%.
Time taken for 75% completion=time taken for 2*50%.
(2)
Himanshu bhadauria said:
5 years ago
For the first-order reaction, the concentration is decreased by 50 in every interval so if 50% is completed in 12 min then the next 25.% in 12 min so total 75% completed in 24 min.
(1)
FREEMANDGENIUS said:
8 years ago
I don't accept that... if the half life is 12 minutes, then after 12 minutes,50% of the initial mass say x is converted.
Hence, at 12minutes--------50% conversion.
then x minutes----------75% conversion.
When you solve it you would get exactly 18minutes.
which is option A.
Hence, at 12minutes--------50% conversion.
then x minutes----------75% conversion.
When you solve it you would get exactly 18minutes.
which is option A.
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