Chemistry Class 11 NCERT Solutions: Chapter 7: Equilibrium Part 2 (For CBSE, ICSE, IAS, NET, NRA 2023)

Get unlimited access to the best preparation resource for CBSE/Class-6 : get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-6.

Q: 5. Find out the value of for each of the following equilibria from the value of




The relation between given as:

The Relation between Kp and Kc

(A) Here,


(B) Here,


Q: 6. For the following equilibrium,

Both the forward and reverse reactions in the equilibrium are elementary bimolecular reactions. What is for the reverse reaction?

Bimolecular Reactions


It is given that for the forward reaction is

Then, for the reverse reaction will be,

Q: 7. Explain why pure liquids and solids can be ignored while writing the equilibrium constant expression?

Pure Liquids and Solids


For a pure substance (both solids and liquids) ,

[Pure substance] =

Now, the molecular mass and density (at a particular temperature) of a pure substance is always fixed and is accounted for in the equilibrium constant. Therefore, the values of pure substances are not mentioned in the equilibrium constant expression.