Question

The reaction between CO and H2 is carried out at a different temperature with initial concentrations of [CO] = 0.33 M and [H2]= 0.56 M . CO(g)+2H2(g)⇌CH3OH(g) At equilibrium, the concentration of CH3OH is 8.0×10−2 M .

Answer 1

CO(g)     +    2 H2(g) <----------------> CH3OH(g)

0.33          0.56                                  0

0.33 - x       0.56 - 2x                             x

at equilibrium, the concentration of CH3OH is 8.0×10−2 M .

[CH3OH] = x = 8.0×10^−2 M

the equilibrium concentrations of

[CO] = 0.33 - x = 0.25 M

[H2] = 0.56 - 2x = 0.40 M

Kc = [CH3OH] / [CO][H2]^2

     = 0.08 / 0.25 x 0.4^2

     = 2

equilibrium constant Kc = 2