Question 7.8: Writing Equilibrium Equations The first step in the industri......

Fundamentals of General, Organic, and Biological Chemistry [986076]

Writing Equilibrium Equations
The first step in the industrial synthesis of hydrogen is the reaction of steam with methane to give carbon monoxide and hydrogen. Write the equilibrium equation for the reaction.

H $_{2}$ O(g) + CH $_{4}$ (g) $\rightleftarrows$ CO(g) + 3 H $_{2}$ (g)

ANALYSIS The equilibrium constant K is the number obtained by multiplying the equilibrium concentrations of the products (CO and H $_{2}$ ) and dividing by the equilibrium concentrations of the reactants (H $_{2}$ O and CH $_{4}$ ), with the concentration of each substance raised to the power of its coefficient in the balanced equation.

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K = $\frac{[CO] [H_2]^ 3}{[H_{2}O] [CH_4]}$

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