Answer to Question #128597 in General Chemistry for A

Question

Good day,

2COF2(g)⇌CO2(g)+CF4(g), Kc=4.30

If only COF2 is present initially at a concentration of 2.00 M, what concentration of COF2
remains at equilibrium?
Express your answer with the appropriate units.
Thanks

Answer 1

K_c=[CO₂][CF₄]/[COF₂]²

let [CO₂] = [CF₄] = x

then [COF₂] = 2.00 - 2x

$\frac{x^{2}}{(2.00-2x)^{2}} = 4.30$

x=0.806

concentration of [COF₂] = 2.00 - 2x = 0.388 M