Half life of reaction : H2O2(aq)= H2O(l) + 1/2 O2 (g) is independent of initial concentration of H2O2 volume of O2 gas after 20 minute is 5L at 1 atm and 27degreeC and after completion of reaction is 50L. The rate constant is :
(1) 1/20 log 10 min ^-1
(2) 2.303/20 log 10 min ^-1
(3) 2.303/20 log 50/45 min ^-1
(4) 2.303/20 log 45/50 min ^-1

Asked by thakurpratyush5 | 14th Aug, 2015, 07:57: PM

Expert Answer:

The correct option is 3 as this reaction is first order reaction.
 
rate space constant space equals space fraction numerator 2.303 over denominator 20 end fraction space log space 50 over 45 space min to the power of negative 1 end exponent

Answered by Prachi Sawant | 15th Aug, 2015, 11:01: PM