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

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

(i)

(ii)

Answer:

The relation between given as:

The Relation between Kp and Kc

(A) Here,

Now,

(B) Here,

Now,

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

Answer:

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

Answer:

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.