When propane is heated to high temperatures, it pyrolyzes or decomposes. Assume that the only reactions that occur are:

C3H8 = C3H6 + H2

C3H8 = C2H4 + CH4

and that these reactions take place in the gas phase.

a) Calculate the composition of the equilibrium mixture of propane and its pyrolysis products at a pressure of 1 bar and over a temperature range of 1000 to 2000 K.

b) Calculate the composition of the equilibrium mixture of propane and its pyrolysis products over a temperature range of 1000 to 2000 K if pure propane at 25 C and 1 bar is loaded into a constant volume reactor and heated.