State the effect of increasing the pressure of the following systems in dynamic equilibrium and give a reason for your answers:
a. PCl3(g)+Cl2(g)⇌PCl5(g)
b. 2NH3(g)⇌N2(g)+3H2(g)
c. H2(g)+I2(g)⇌2HI(g)
d. CaCO3(s)⇌CaO(s)+CO2(g)
e. H2O(l)⇌H2O(g)