Question

In a reaction carried out at 500 K, 0.001 % of the total number of collisions are effective. The energy of activation of the reaction is appox.

• A.
  15. 8 K cal mole-1
• B. 11.5 K cals mole-1
• C.
  12. 8 K cals mole-1
• D. Zero

Answer 1

Answer: (B)

11.5 K cals mole-1

Answer 2

$e - Ea/2 \times 500 = 10^{- 5}\therefore E_{a} = 11.5Kcals$