The standard Gibbs energy change at 300 K for the reaction, $2A\underset{{}}{\overset{{}}{\leftrightharpoons}}B + C$ is $2494.2 J.$ At a given time, the composition of the reaction mixture is $[A] = \frac{1}{2},\,\,\,[B] = 2\,\,\,\,\,{\rm{and}}\,\,\,\,[C] = \frac{1}{2}$ The reaction proceeds in the [R = 8.314 JK/mole, e = 2.718]

Forward direction because $Q > {K_C}$

Forward direction because $Q < {K_C}$

NEET UG CHEMISTRY MCQ: Equilibrium

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The standard Gibbs energy change at 300 K for the reaction,

2A\underset{{}}{\overset{{}}{\leftrightharpoons}}B + C

2494.2 J.

At a given time, the composition of the reaction mixture is

[A] = \frac{1}{2},\,\,\,[B] = 2\,\,\,\,\,\mathrm{and}\,\,\,\,[C] = \frac{1}{2}

The reaction proceeds in the [R = 8.314 JK/mole, e = 2.718]

View answer and explanation

Correct option: B

Reverse direction because

Q > {K_C}

Option B (Reverse direction because

Q > {K_C}

) is correct because the reaction quotient (Q) is greater than the equilibrium constant (Kc), indicating that the reaction will proceed in the reverse direction to reach equilibrium.

More Questions from Equilibrium

Practice All Chapter MCQs →

Given below are two statements: One is labelled as Assertion A and the other labelled as Reason R.
Assertion A: During the boiling of water having temporary hardness,

Mg{(HC{O_3})_2}

is converted to

MgC{O_3}

.
Reason R The solubility product of

Mg{(OH)_2}

is greater than that of

MgC{O_3}

.
In the light of the above statements, choose the most appropriate answer from the options given below At a certain temperature,

K_{\mathrm{P}}

for the dissociation of solid

\mathrm{CaCO}_3

4.5 \times 10^{-2}

atm and for the reaction

\mathrm{C}(\mathrm{s})+\mathrm{CO}_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{g}),

the

K_{\mathrm{P}}

value is

2.0 \mathrm{~atm}.

The pressure of carbon monoxide at this temperature, when solid carbon

\mathrm{CaO}

and

\mathrm{CaCO}_3

are mixed together and allowed to attain equilibrium is Phenolphthalein shows … in acid medium. At the state of dynamic equilibrium, for solute

+

solvent

\leftrightharpoons

solution. For

\mathrm{PC}{\mathrm{l}_5}\leftrightharpoons\mathrm{PC}{\mathrm{l}_3} + \mathrm{C}{\mathrm{l}_2}

, initial concentration of each reactant and product is 1 M. If

{K_{\mathrm{eq}}} = 0.41

then Select the

\mathrm{p}{K_a}

value of the strongest acid from the following