Fluorine can react with oxygen to yield oxygen
difluoride:    2F2(g) + O2(g) D 2OF2(g)
What is the value of Keq if the following
concentrations are found at equilibrium?
   [O2] = 0.200mol/L; [F2]=0.0100mol/L
     [OF2]=0.0633mol/L
What is [O2] at equil when [OF2]=0.22mol/L and
[F2]=0.0300mol/L?
What is [OF2] at equil when
   [F2]=0.080mol/L and [O2] = 0.650mol/L?