Carbonyl fluoride, COF 2 , is an important intermediate used in the production of fluorine-containing compounds....
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Carbonyl fluoride, COF 2 , is an important intermediate used inthe production of fluorine-containing compounds. For instance, itis used to make the refrigerant carbon tetrafluoride, CF 4 via thereaction 2COF 2 (g)⇌CO 2 (g)+CF 4 (g), K c =9.00 If only COF 2 ispresent initially at a concentration of 2.00 M , what concentrationof COF 2 remains at equilibrium? Thanks! ( I keep getting .1 butthat is incorrect)
Carbonyl fluoride, COF 2 , is an important intermediate used inthe production of fluorine-containing compounds. For instance, itis used to make the refrigerant carbon tetrafluoride, CF 4 via thereaction 2COF 2 (g)⇌CO 2 (g)+CF 4 (g), K c =9.00 If only COF 2 ispresent initially at a concentration of 2.00 M , what concentrationof COF 2 remains at equilibrium? Thanks! ( I keep getting .1 butthat is incorrect)
Answer & Explanation Solved by verified expert
                  2COF2 (g)  ⇌  CO2 (g)  +  CF4 (g)
initial           2.00                0                   0
change          -2a               +a                  +a
Equb           2-2a                a                   a
Equilibrium constant, Kc = ([CO2 ][CF4 ]) / [COF2 ]2
                             9.00 = (a x a) / (2-2a)2
                                 a = 10.857 M
Therefore the concentration of COF2 remain at equilibrium = 2-2a
                                                                                    = 2-(2x0.857)
                                                                                     = 0.29 M
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