A sample of milk splits after 60 m i n . at 300 K and after 40 m i n . at 400 K when the population of…

A sample of milk splits after 60min . at 300K and after 40min . at 400K when the population of Iactobacillus acidophilus in it doubles. The activation energy (in kJ/mol ) for this process is closest to ______________.
(Given, R=8.3Jmol-1K-1,ln23=0.4,e-3=4.0 )

Solution

lnk2k1=EaR1T11T2
ln6040=Ea8.3×100400×300
ln32×8.3×1200=Ea
Ea=0.4×8.3×1200
Ea=3984Jmol.
Ea=3.984 k Jmol.

Asked in: JEE Main 2020 (09 Jan Shift 2)

Practice more Chemical Kinetics questions on Aicharya