The activation energy for the forward reaction X - Y is 60 kJ mol-1 and - H is -20 kJ mol-1- The activation energy for the reverse reaction is-

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Calorimetry

The activatio...

Question

The activation energy for the forward reaction $X$ $\to$ $Y$ is $60 k J$ $m o l^{- 1}$ and $Δ H$ is $- 20 k J$ $m o l^{- 1}$ . The activation energy for the reverse reaction is:

40 k J

m o l^{- 1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

60 k J

m o l^{- 1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

80 k J

m o l^{- 1}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

20 k J

m o l^{- 1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $80 k J$ $m o l^{- 1}$
$E_{a} = E_{a (f)} + Δ H . = 60 + 20 = 80 k J m o l^{- 1}$
( $Δ H$ = -ve means exothermic reaction, so only magnitude value is taken. )

Suggest Corrections

Similar questions

Q. The activation energy for the forward reaction

X \to Y

60 K J

{m o l}^{- 1}

and

Δ H

- 20 K J

{m o l}^{- 1}

. The activation energy for the backward reaction

Y \to X

is:

Q. For a given reaction, energy of activation for forward reaction

(E_{a f})

80 k J / m o l

Δ H = - 40 k J / m o l

for the reaction. A catalyst lowers

E_{a f}

20 k J / m o l

. The ratio of energy of activation for reverse reaction before and after addition of catalyst is:

Q. The activation energy for the forward reaction X Y is

60

m o l^{- 1}

and

Δ H

- 20

m o l^{- 1}

. The activation energy for the backward reaction Y X is:

For the reaction $A + B \to C + D Δ H = - 20 k J m o l^{- 1}$ . The activation energy of the forward reaction is $85 k J m o l^{- 1}$ . The activation energy for backward reaction is

Q. If a reaction, A + B

\to

C, is exothermic to the extent of 30 kJ

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:

Join BYJU'S Learning Program

The activation energy for the forward reaction X → Y is 60kJ mol−1 and ΔH is −20kJ mol−1. The activation energy for the reverse reaction is:

The correct option is C 80kJ mol−1Ea=Ea(f)+ΔH.=60+20=80kJmol−1(ΔH = -ve means exothermic reaction, so only magnitude value is taken. )

The activation energy for the forward reaction $X$ $\to$ $Y$ is $60 k J$ $m o l^{- 1}$ and $Δ H$ is $- 20 k J$ $m o l^{- 1}$ . The activation energy for the reverse reaction is:

The correct option is C $80 k J$ $m o l^{- 1}$
$E_{a} = E_{a (f)} + Δ H . = 60 + 20 = 80 k J m o l^{- 1}$
( $Δ H$ = -ve means exothermic reaction, so only magnitude value is taken. )