On increasing temperature from 200 K to 220 K rate of reaction A increases by 3 times and rate of - Chemistry - Chemical Kinetics

Question

On increasing temperature from 200 K to 220 K rate of reaction A
increases by 3 times and rate of reaction B increases by 9 times
then correct relationship between activation energy of A and B is
:
(1) EA = 3EB (2) 3EA =
EB (3) EB = 2EA (4) EA
= 2EB

Vartika Jain · Accepted Answer

Dear Student,

Using Arrhenius equation, ln (k2k1) = EaR(1T1-1T2)For reaction A :k2k1 = 3T1=200T2=220So, ln 3=EAR(1200-1220)    
(i) For reaction B :k2k1 = 9T1=200T2=220So, ln 9=EBR(1200-1220)    
(ii) Dividing (i) and (ii)ln 3ln 9 = EAEBor, 12=EAEBor, EB=2EAHence, correct answer is (3)

On increasing temperature from 200 K to 220 K rate of reaction A increases by 3 times and rate of reaction B increases by 9 times then correct relationship between activation energy of A and B is : (1) EA = 3EB (2) 3EA = EB (3) EB = 2EA (4) EA = 2EB

On increasing temperature from 200 K to 220 K rate of reaction A increases by 3 times and rate of reaction B increases by 9 times then correct relationship between activation energy of A and B is :
(1) E_A = 3E_B(2) 3E_A = E_B (3) E_B = 2E_A(4) E_A = 2E_B