For the reaction $2X_{(g)} + Y_{(g)} \rightleftharpoons 2Z_{(g)} + 80 \ kcal$,which conditions of temperature and pressure will yield more $Z$ at equilibrium?

Which among the following reactions is favoured in the forward direction by an increase in temperature?

In the equilibrium $N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)} + 22 \ kcal$,the formation of ammonia is favored by:

The dissociation of phosgene,which occurs according to the reaction $COCl_{2(g)} \rightleftharpoons CO_{(g)} + Cl_{2(g)}$,is an endothermic process. Which of the following will increase the degree of dissociation of $COCl_2$?

According to Le Chatelier's principle,adding heat to a solid and liquid in equilibrium with an endothermic nature will cause the:

Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per the following endothermic reaction:
$CH_{4(g)} + H_2O_{(g)} \rightleftharpoons CO_{(g)} + 3H_{2(g)}$
$(a)$ Write an expression for $K_p$ for the above reaction.
$(b)$ How will the values of $K_p$ and the composition of the equilibrium mixture be affected by:
$(i)$ increasing the pressure
$(ii)$ increasing the temperature
$(iii)$ using a catalyst?