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20 August, 14:07

Be sure to answer all parts. For the equilibrium 2 H2S (g) ⇌ 2 H2 (g) + S2 (g) Kc = 9.0 * 10-8 at 700°C the initial concentrations of the three gases are 0.740 M H2S, 0.740 M H2, and 0.370 M S2. Determine the equilibrium concentrations of the gases.

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  1. 20 August, 14:15
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    2H2S (g) ⇌ 2H2 (g) + S2 (g)

    0.74 0.74 0.37 (initial)

    0.74 - 2x 0.74 + 2x 0.37 + x (at equilibrium)

    (0.74 + 2x) ^2 * (0.37 + x) / (0.74 - 2x) ^2

    = 9*10^-8

    x = - 0.356
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