Given:
T1 = 349 K
K2/K1 = 6.5/1
Ea = 65.75 KJ/mol
= 65750 J/mol
use:
ln(K2/K1) = (Ea/R)*(1/T1 - 1/T2)
ln(6.5/1) = (65750.0/8.314)*(1/349 - 1/T2)
1.8718 = 7908.3474*(1/349 - 1/T2)
T2 = 380 K
Answer: 380 K
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