Q. The enthalpy change during the reaction A2(g) + B2(g) → 2AB(g) is Bond energy data are given as follows A – A = x kJ mol–1 B – B = y kJ mol–1 A – B = z kJ mol–1 x + y + z x – y – 2z x + y – 2z x + y – z

Open in App

Solution

Suggest Corrections

Similar questions

Q. Identify the elements

X

and

Y

using the ionisation energy values given below :

	1st Ionisation Enthalpy(KJ/mol)	2nd Ionisation Enthalpy(KJ/mol)
$X$	$495$	$4563$
$Y$	$731$	$1450$

Q. In a reversible reaction, the enthalpy change and the activation energy in the forward direction are respectively

- x k J m o l^{- 1}

and

y k J m o l^{- 1}

. Therefore, the energy of activation in the backward direction, in

k J m o l^{- 1}

is:

Q. An exothermic reaction

X \to Y

has an activation energy

30 k J / m o l

. If energy change

Δ E

during the reaction is

- 20 k J / m o l,

the activation energy for the reverse reaction in

k J / m o l

is ______.

The standard electrode potential for an electrochemical cell is $2.2 V$ . Calculate the standard Gibbs energy change for reaction:
$X (s) + Y^{2 +} (a q) \to X^{2 +} (a q) + Y (s)$
(Given, $1 F = 96500 C m o l^{- 1}$ )
(correct answer +1, wrong answer -0.25)

Q. If enthalpy of atomisation for

B r_{2} (l)

is x

k J / m o l

and bond enthalpy for

B r_{2}

is y

k J / m o l

, the relation between them:

Join BYJU'S Learning Program