PART - 1 CH - 6 Equilibrium — Chemistry STD 11 Science — Question

1. Write the conjugate acid of NH₃.
2. Assign reason for the following:

1. A solution of NH₄Cl in water shows pH less than 7.
2. In qualitative analysis NH₄Cl is added before adding NH₄OH for testing Fe³⁺ or AP³⁺ ions.

3. Consider the reaction:

$\text{N}_2(\text{g})+3\text{H}_2\text{(g)}\rightleftharpoons2\text{NH}_3+\text{Heat}$

Indicate the direction in which the equilibrium will shift when:

1. Temperature is increased.
2. Pressure is increased.