Consider the following reaction:
$$\text{N}_2\text{O}_4(g) = 2\text{NO}_2(g);\;\Delta H^0 = +58\,\text{k}$$
For each of the following cases (a, b), the direction in which the equilibrium shifts is:
(a) Temperature is decreased.
(b) Pressure is increased by adding $$\text{N}_2$$ at constant T.

A

(a) towards product, (b) towards reactant

B

(a) towards reactant, (b) towards product

C

(a) towards reactant, (b) no change

D

(a) towards product, (b) no change