For the following equation:
N2(g) + 3 H2(g) â†" 2 NH3(g)
a. Write the expression for the equilibrium constant.
b. Which way would the reaction shift in each of the following cases?
(i). Ammonia is added.
(ii) Nitrogen is added.
(iii) Hydrogen is added.
(iv) Sodium chloride is added.