Question

An equilibrium mixture of the following reaction was found to have [COF2] = 0.255 M and [CF4] = 0.118 M at 1000°C. What is the concentration of CO2?
2 COF2(g) CO2(g) + CF4(g)
Keq = 2.00 at 1000°C

Thanks:)

Answer 1

You REALLY should use an arrow; otherwise we don't know the difference between reactants and products.
2COF2 ==> CO2 + CF4
Keq = 2.00 = (CO2)(CF4)/(COF2)^2
The problem gives (COF2) = 0.255M
The problem gives (CF4) = 0.118M
Substitute those two into Keq and solve for the only unknown of (CO2).

Answer 2

Thanks:)