Coal (C) can be heated with steam (H₂O) at high temperatures to produce a mixture of hydrogen and carbon monoxide gases. Methanol, which is a useful fuel, can be produced from these gases by the reaction below. At a particular high temperature, the equilibrium concentrations are the following:
[H₂] = 0.095 mol/L, [CO] = 0.035 mol/L, [CH₃OH] = 0.065 mol/L. What is the value of the equilibrium constant, K_c, for this reaction at this temperature?
2H₂(g) + CO(g) $\leftrightarrows$ CH₃OH(g)

Question

Coal (C) can be heated with steam (H₂O) at high temperatures to produce a mixture of hydrogen and carbon monoxide gases. Methanol, which is a useful fuel, can be produced from these gases by the reaction below. At a particular high temperature, the equilibrium concentrations are the following:
[H₂] = 0.095 mol/L, [CO] = 0.035 mol/L, [CH₃OH] = 0.065 mol/L. What is the value of the equilibrium constant, K_c, for this reaction at this temperature?
2H₂(g) + CO(g)

\leftrightarrows

CH₃OH(g)

Quizplus · Accepted Answer

The equilibrium constant expression for the reaction is Kc = [CH3OH] / ([H2]^2 * [CO]). Substituting the given concentrations into this expression gives Kc = 0.065 / (0.095^2 * 0.035) = 206.

Coal (C) Can Be Heated with Steam (H2O) at High ⇆\leftrightarrows⇆

Coal (C) Can Be Heated with Steam (H₂O) at High $\leftrightarrows$