Question

Calculate the temperature of first oder reaction at which its half life is 2 min

Answer 1

Answer:

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Explanation:

It has been observed that in homogeneous thermal reactions, for every ten degree rise in temperature, the rate constant is doubled or tripled. The ratio of rate constants at two temperatures separated by 10°C is called the temperature coefficient.

so k1k2=3 ( here ) 

Rate constant  =1000.693=0.00693

logk1k2=log 3

log(0.00693)[k2]=log 3 

log k2−log 0.00693=log 3 

log k2=log 3+log 0.00693 

log k2=0.4771+(−2.16) 

log k2=−1.68

log k2=0.0208

⇒k2=2.08×10−2