In which of the following reactions does an instantaneous increase in the volume of the reaction vessel favor formation of the products?
A N2(g) + 3H2(g) = 2NH3(g)
B PCl5(g) = PCl3(g) + Cl2(g)
C N2(g) + O2(g) = 2NO(g)
D H2(g) + I2(g) = 2HI(g)
E MgO(s) + CO2(g) = MgCO3(s)