For the reaction CH4(g) +2H2S(g) ⇌ CS2(g) + 4H2(g) , Kc = 0.046 at 687oC. In an experiment, 4.00 mol of CH4, 1.00 mol of H2S, 2.00mol of CS2, and 2.00 mol of H2 are mixed in a 500mL vessel. Is the reaction at equilibrium? If not, in which direction is it progressing?
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Answer:
CH4(g)+2H2S(g)→CS2(g)+4H2(g).
Initial concentration.
CH4=1/0.25=4M
H2S=2/0.25=8M
CS2=1/0.25=4M
H2=2/0.25=8M
At equilibrium.
CH4=5.56M
Therefore the reaction is at equilibrium