For the gaseous phase reaction, $2NO\leftrightharpoons{N_2} + {\rm{ }}{O_2}$, $\Delta {H^ \circ } = {\rm{ }} - {\rm{ }}43.5{\rm{ }}\;k\;cal{\rm{ }}\;mo{l^{ - 1}},$ which statement is correct for, ${N_2}\left( g \right){\rm{ }} + {\rm{ }}{O_2}\left( g \right){\rm{ }}\leftrightharpoons{\rm{ }}2NO\left( g \right)?$

$K$ is independent of temperature

$K$ increases as temperature decreases

$K$ varies with addition of $NO$

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NEET UG CHEMISTRY MCQ: Equilibrium

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Understanding +4 | -1

For the gaseous phase reaction,

2NO\leftrightharpoons{N_2} + \mathrm{ }{O_2}

\Delta {H^ \circ } = \mathrm{ } - \mathrm{ }43.5\mathrm{ }\;k\;cal\mathrm{ }\;mo{l^{ - 1}},

  which statement is correct for,

{N_2}\left( g \right)\mathrm{ } + \mathrm{ }{O_2}\left( g \right)\mathrm{ }\leftrightharpoons\mathrm{ }2NO\left( g \right)?

View answer and explanation

Correct option: C

K

decreases as temperature decreases

Option C (

K

decreases as temperature decreases) is correct because the forward reaction is exothermic, so decreasing the temperature will favor the reactants, thus decreasing the equilibrium constant for the reverse reaction.

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