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Chemical Equilibrium question

2023 · 6 Apr · Shift 2 · Q20

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JEE Main
Chemistry
Chemical Equilibrium
2023 · 6 Apr · Shift 2 · Q20

Chemical Equilibrium question

2023 · 6 Apr · Shift 2 · Q20

JEE MainChemistryChemical EquilibriumNumerical+4 / −1

The equilibrium composition for the reaction

\mathrm{PCl}_{3}+\mathrm{Cl}_{2} \rightleftharpoons \mathrm{PCl}_{5}

at

298 \mathrm{~K}

is given below:

\left[\mathrm{PCl}_{3}\right]_{\mathrm{eq}}=0.2 \mathrm{~mol} \mathrm{~L}^{-1},\left[\mathrm{Cl}_{2}\right]_{\mathrm{eq}}=0.1 \mathrm{~mol} \mathrm{~L}^{-1},\left[\mathrm{PCl}_{5}\right]_{\mathrm{eq}}=0.40 \mathrm{~mol} \mathrm{~L}^{-1}

If

0.2 \mathrm{~mol}

of

\mathrm{Cl}_{2}

is added at the same temperature, the equilibrium concentrations of

\mathrm{PCl}_{5}

is

\underline{\hspace{2cm}}

\times 10^{-2} \mathrm{~mol} \mathrm{~L}^{-1}

Given :

\mathrm{K}_{\mathrm{c}}

for the reaction at

298 \mathrm{~K}

is 20

Numerical answer

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