[ C O F 2 ] = Carbonyl fluoride, COF 2 , is an important intermediate used in th

Question

[COF 2 ] = Carbonyl fluoride, COF 2 , is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF 4 via the reaction 2COF 2 (g)?CO 2 (g)+CF 4 (g), K c =5.20 If only COF 2 is present initially at a concentration of 2.00 M , what concentration of COF 2 remains at equilibrium? Express your answer with the appropriate units. Consider the reaction If a reaction vessel initially contains only CO and NH 3 at concentrations of 1.00 M and 2.00 M , respectively, what will the concentration of HCONH 2 be at equilibrium? Express your answer with the appropriate units.

Explanation / Answer

A) let the decrease in molarity of COF2 be 2x.so,

final molarity of CO2=x

molarity of CF4=x

so,

5.2=x^2/(2-2x)^2

or x=0.82

so final concentration of COF4=2-2*0.82

=0.36 M

b)let the decrease in molairty be x.so,

Kc=x/((1-x)*(2-x))

or 0.68=x/((1-x)*(2-x))

or x=0.504

so [HCONH2]=0.504 M

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