Analyse the following equations and answer the questions
i. NH4Cl(s) ⇌ NH3(g) + HCl(g)
ii. H2(g) + I2(g) ⇌ 2HI(g)
iii. N2(g) + 3H2(g) ⇌ 2HI3(g)
a. Which of these reactions are affected by change in pressure? What are the reasons?
b. How the increase in pressure influence the reaction which you have already identified ?