(Solved):   3. Carbon monoxide and chlorine gas react to form phosgene: \[ \mathrm{CO}(\mathrm{g})+\ma ...

 

3. Carbon monoxide and chlorine gas react to form phosgene: \[ \mathrm{CO}(\mathrm{g})+\mathrm{Cl}_{2}(\mathrm{~g}) \rightarrow \mathrm{COCl}_{2} \quad \mathrm{Kp}=3.10 @ 700 \mathrm{~K} \] If a reaction mixture initiallly contains 215 torr of \( \mathrm{CO} \) and 245 torr of \( \mathrm{Cl}_{2} \), what is the mole fraction of \( \mathrm{COCl}_{2} \) when equilibrium is reached? 4. Consider this reaction \[ \mathrm{NiO}(\mathrm{s})+\mathrm{COg}) \rightarrow \mathrm{Ni}(\mathrm{s})+\mathrm{CO}_{2} \quad \mathrm{Kc}=4.0 \times 10^{3} @ 1500 \mathrm{~K} \] If a mixture of solid nickel (II) oxide and \( 0.20 \mathrm{M} \) carbon monoxide comes to equilibrium at \( 1500 \mathrm{~K} \), what is the equilibrium concentration of \( \mathrm{CO}_{2} \)