Question

Q.4. A substance decomposes by following first order kinetics If 50% of the compound is decomposed
in 120 minutes, how long will it take for 90% of the
compound to decompose?

Please tell log value of [A•] and [A] to be taken

Answer 1

Answer:

If 50% of a sample of the compound is decomposed in 120 minutes, how long it take for 90% of the compounds to decompose. =2.303×1200.693=389.79min

Explanation: