If a reaction A + B arrow C, is exothermic to the extent of 30 KJ mol -1 and the forward reaction has an activation energy, 70 KJ mol -1 the activation energy for the reverse reaction is :-

Question

If a reaction A + B arrow C, is exothermic to the extent of 30 KJ mol -1 and the forward reaction has an activation energy, 70 KJ mol -1 the activation energy for the reverse reaction is :- (A) 30 KJ mol -1 (B) 40 KJ mol -1 (C) 70 KJ mol -1 (D) 100 KJ mol -1

Tardigrade Admin · Accepted Answer

Δ H = E a f - E a b -30=70- x x =100 kJ mol -1

Q. If a reaction $A + B \to C$ , is exothermic to the extent of $30 K J m o l^{- 1}$ and the forward reaction has an activation energy, $70 K J m o l^{- 1}$ the activation energy for the reverse reaction is :-

$30 K J m o l^{- 1}$

$40 K J m o l^{- 1}$

$70 K J m o l^{- 1}$

$100 K J m o l^{- 1}$

$Δ H = E_{a_{f}} - E_{a_{b}}$
$- 30 = 70 - x$
$x = 100 k J m o l^{- 1}$

Q. If a reaction A+B→C, is exothermic to the extent of 30KJmol−1 and the forward reaction has an activation energy, 70KJmol−1 the activation energy for the reverse reaction is :-

30KJmol−1

40KJmol−1

70KJmol−1

100KJmol−1