# Chemistry Class 11 NCERT Solutions Chapter 7 Equilibrium Part 5

Q: 14. One mole of and one mole of are taken in 10 L vessel and heated to at equilibrium of water (by mass) reacts with CO according to the equation,

Calculate the equilibrium constant for the reaction

The given reaction is:

Therefore, the equilibrium constant for the reaction,

Q: 15. At 700 K, equilibrium constant for the reaction

Is If is present at equilibrium at 700 K, what are the concentrations of and assuming that we initially started with and allowed it to reach equilibrium at 700 K?

It is given that equilibrium constant for the reaction

is 54.8.

Therefore, at equilibrium, the equilibrium constant for the reaction

will be

Let the concentrations of hydrogen and iodine at equilibrium be x

Therefore,

(Approximately)

Hence, at equilibrium,

Q: 16. What is the equilibrium concentration of each of the substances in the equilibrium when the initial concentration of was 0.78 M?