Answer to Question #300692 in General Chemistry for bbibbiuuu

Question

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?

Answer 1

CH_4(g)+2H₂S_(g)→CS_2(g)+4H_2(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