What is the expression for Kc for the following reaction: C(s) + 2H2(g) ⇌ CH4(g)?
a) Kc = [CH4] / [C][H2]^2
b) Kc = [C][H2]^2 / [CH4]
c) Kc = [CH4]^2 / [C][H2]
d) Kc = [C][H2] / [CH4]^2