Chemical Equilibrium

Consider the following reaction:
N₂O₄ ⇌ 2NO₂(g); ∆H° = +58 kJ
For each of the following cases (a, b) the direction in which the equilibrium shifts is:

If the solubility product of AB₂ is 3.20 * 10⁻¹¹ M³, then the solubility of AB₂ in pure water is _____ * 10⁻⁴ mol L⁻¹. [Assuming that neither kind of ion reacts with water]

If the equilibrium constant for A ⇌ B + C is K⁽¹⁾(eq) and that of B + C ⇌ P is K⁽²⁾(eq), the equilibrium constant for A ⇌ P is:

For the equilibrium A ? B, the variation of the rate of the forward (a) and reverse (B) reaction with time is given by:

The number of  $\mathrm{C}=\mathrm{O}$ groups present in a tripeptide Asp - Glu - Lys is

The incorrect statement(s) among (a) - (d) regarding acid rain is (are):

(a) It can corrode water pipes.

(b) It can damage structures made up of stone.

(c) It cannot cause respiratory ailments in animals

(d) It is not harmful for trees