A reaction is carried out at 600 K . If the same reaction is carried out in the presence of catalyst at the same rate and same frequency factor, the temperature required is 500 K . What is the activation energy of the reaction, if the catalyst lowers the activation energy barrier by 20 kJ/mol?

Question

A reaction is carried out at 600 K . If the same reaction is carried out in the presence of catalyst at the same rate and same frequency factor, the temperature required is 500 K . What is the activation energy of the reaction, if the catalyst lowers the activation energy barrier by 20 kJ/mol?, 100 kJ/mol, 120 kJ/mol, 80, None of these

MARKS App · Accepted Answer

k = A e - E a / R × 600 k ′ = Ae − Ea − 20 R × 500 k = k ′ E a R × 600 = E a - 20 R × 500 E a 6 = E a - 20 5 5 6 E a = E a - 20 20 = E a - 5 6 E a E a = 20 × 6 E a = 120 k J / m o l

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