The synthesis of methanol from carbon monoxide and hydrogen gas is described by the following chemical equation:
co(g)+2h2(g)⇌ch3oh(g)
the equilibrium constant for this reaction at 25 ∘c is kc=2.3×104. in this tutorial, you will use the equilibrium-constant expression to find the concentration of methanol at equilibrium, given the concentration of the reactants.

determine the expression for the equilibrium constant, kc, for the reaction by identifying which terms will be in the numerator and denominator:

the equilibrium-constant expression is a mathematical equation that can be rearranged to solve for any of the variables in it. rearrange the equilibrium-constant expression to solve for [ch3oh].
[ch3oh]=[ch3oh]=
1kc[co][h2]2
kc[co][h2]2
kc[co][h2]2
[co][h2]2kc