Energy of activation of forward reaction for an endothermic process is 50 kJ. If enthalpy change for forward reaction is 20 kJ then enthalpy change for backward reaction will be

Question

Energy of activation of forward reaction for an endothermic process is 50 kJ. If enthalpy change for forward reaction is 20 kJ then enthalpy change for backward reaction will be (A) 30 kJ (B) 20 kJ (C) 70 kJ (D) 50 kJ

Tardigrade Admin · Accepted Answer

For endothermic reaction, Ea, b = Ea, f -Δ H° = 50 kJ - 20 kJ = 30 kJ

Q. Energy of activation of forward reaction for an endothermic process is $50 k J$ . If enthalpy change for forward reaction is $20 k J$ then enthalpy change for backward reaction will be

30 kJ

20 kJ

70 kJ

50 kJ

For endothermic reaction,

$E_{a, b} = E_{a, f} - Δ H^{\circ}$

$= 50 k J - 20 k J = 30 k J$

Q. Energy of activation of forward reaction for an endothermic process is 50kJ. If enthalpy change for forward reaction is 20kJ then enthalpy change for backward reaction will be