Chemistry Class 11 NCERT Solutions: Chapter 7: Equilibrium Part 8 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Q: 22. Monochloride decomposes into bromine and chloride and reaches the equilibrium:

For which at 500 K. If initially pure is present at a concentration of , what is its molar concentration in the mixture at equilibrium?

Structure of Bromine Monochloride


Let the amount of bromine and chlorine formed at equilibrium be The given reaction is

Now, we can write,

Therefore, at equilibrium,

Q: 23. At 1127 K and 1 atm pressure, a gaseous mixture of in equilibrium with solid carbon has by mass

Calculate for this reaction at the above temperature.


Let the total mass of the gaseous mixture be 100 g.

Mass of

And, mass of

Now, number of moles of

Number of moles of

Partial pressure of

Partial pressure of


For the given reaction,

We know that,

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