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23 June, 00:37

Select the best single answer. The water-gas shift reaction plays a central role in the chemical methods for obtaining cleaner fuels from coal: CO (g) + H2O (g) ⇌ CO2 (g) + H2 (g) At a given temperature, Kp = 2.7. If 0.13 mol of CO, 0.56 mol of H2O, 0.62 mol of CO2, and 0.61 mol of H2 are put in a 2.0-L flask, in which direction does the reaction proceed?

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  1. 23 June, 00:46
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    The reaction will proceed to the left

    Explanation:

    Step 1: The balanced equation

    CO (g) + H2O (g) ⇌ CO2 (g) + H2 (g)

    Step 2: Data given

    Kp = 2.7

    Number of moles of CO = 0.13 mol

    Number of moles of H2O = 0.56 mol

    Number of moles of CO2 = 0.62 mole

    Number of moles of H2 = 0.61 mol

    Volume = 2.0L

    Step 3: Calculate Q

    Pco = 0.13 / 1.92 P

    Ph2o = 0.56 / 1.92 P

    Pco2 = 0.62/1.92 P

    Ph2 = 0.61 / 1.92 P

    Q = [CO2][H2] / [CO][H2O] = 5.2

    Q > Kp The reaction will proceed to the left

    The reaction will proceed in the reverse direction in order to increase the concentrations of both CO and H2O and decrease that of CO2 and H2 until Q = K.
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