Carbonyl fluoride, COF2. is an important intermediate used in the production of
ID: 729473 • Letter: C
Question
Carbonyl fluoride, COF2. is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF4 via the reaction 2COF2(g) C02(g) + CF4(g), Kc = 6.60 If only COF2 is present initially at a concentration of 2.00 M, what concentration of COF2 remains at equilibrium? Express the molar concentration numerically. [COF2]Explanation / Answer
2COF2--------->CO2 +CF4 AT EQUILIBRIUM 2-2x -----------> x x kc=6.6 = (x)(x)/(2-2x)^2 6.6(2-2x)^2= x^2 6.6(4+4x^2-8x) =x^2 26.4 +26.4x^2 -52.8x =x^2 25.4x^2-52.8x+26.4=0 on solving the above polynomial we have x=0.837 hence at equilibrium [COF2] = 2-2(0.837) = 0.326