Water Gas The water-gas reaction is a source of hydrogen. Passing steam over hot

Question

Water Gas The water-gas reaction is a source of hydrogen. Passing steam over hot carbon produces a mixture of carbon monoxide and hydrogen: H_2O(g) + C(s) CO(g) + H_2(g) The value of K_c for the reaction at 1000 degree C is 3.00 times 10^-2. Calculate the equilibrium partial pressures of the products and reactants if P_H_2O = 0.442 atm and P_CO = 5.000 atm at the start of the reaction. Assume that the carbon is in excess. Determine the equilibrium partial pressures of H_2O, CO, and H_2 after CO and H_2 at 0.076 atm are added to the equilibrium mixture in part a.

Explanation / Answer

For the given reaction,

Data given in a. is used for the calcuations in b.

b. Change in p[H2O] from a to b = 0.32683 - 0.27500

                                                    = 0.05183 atm

So,

Equilibrium pressure of p[H2] = 0.167 - 0.05183

                                                = 0.11517 atm

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