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)⇌co2(g)+cf4(g), kc=4.20 if only cof2 is present initially at a concentration of 2.00 m, what concentration of cof2 remains at equilibrium?

The concentration of remains at equilibrium is 0.40 M.

Explanation:-

Initial concentration of = 2 M

The given balanced equilibrium reaction is,

Initial conc.                      2 M             0             0            

At eqm. conc.           (2-2x) M            x M        x M

The expression for equilibrium constant for this reaction will be,

Now put all the given values in this expression, we get :

By solving the term 'x', we get :

x =  0.80 M

Thus, the concentrations of at equilibrium is : (2-2x) = 2-2(0.80)=0.40 M

The concentration of remains at equilibrium is 0.40 M.