Question

Thermal decomposition of gaseous X₂ to gaseous X at 298 K takes place according to the following equation:
X₂(g) ⇌ 2X(g)
The standard reaction Gibbs energy, ΔrG⁰, of this reaction is positive. At the start of the reaction, there is one mole
of X₂ and no X. As the reaction proceeds, the number of moles of X formed is given by β. Thus, βequilibrium is the
number of moles of X formed at equilibrium. The reaction is carried out at a constant total pressure of 2 bar.
Consider the gases to behave ideally. (Given: R = 0.083 L bar K⁻¹ mol⁻¹)
The INCORRECT statement among the following, for this reaction is
(A) Decrease in the total pressure will result in formation of more moles of gaseous X
(B) At the start of the reaction, dissociation of gaseous X₂ takes place spontaneously
(C) ???? ????????????????????????????????????????m = 0.7
(D) Kc < 1

Answer 1

Answer:

Thermal decomposition of gaseous X₂ to gaseous X at 298 K takes place according to the following equation:

X₂(g) ⇌ 2X(g)

The standard reaction Gibbs energy, ΔrG⁰, of this reaction is positive. At the start of the reaction, there is one mole

of X₂ and no X. As the reaction proceeds, the number of moles of X formed is given by β. Thus, βequilibrium is the

number of moles of X formed at equilibrium. The reaction is carried out at a constant total pressure of 2 bar.

Consider the gases to behave ideally. (Given: R = 0.083 L bar K⁻¹ mol⁻¹)

The INCORRECT statement among the following, for this reaction is

(A) Decrease in the total pressure will result in formation of more moles of gaseous X

(B) At the start of the reaction, dissociation of gaseous X₂ takes place spontaneously

(C) ???? ????????????????????????????????????????m = 0.7

(D) Kc < 1