E2.25 Equilibrium Constant

Example 2.25: Acetylene can be made by the reaction of carbon and hydrogen. Calculate the equilibrium constant at 2300 °C. Use the following data:

Specific heat is given by C_p = a + bT + cT² and their values are tabulated.

Solution

a = Sυ_ia_i = -0.8

b = Sυ_i b_i = 8.44 ´10^-4

c = Sυ_ic_i = 3.5 ´ 10^-8

Integration constant, ΔH_o (Equation 2.69)

Integration constant, ΔS_o (Equation 2.70)

Energy of formation, ΔG (Equation 2.71):

Equilibrium constant, K