$*5\mathrm{.}2\mathrm{.}3$ Phosgene gas is probably most famous for being the first toxic gas used offensively in World War I, but it is also used extensively in the chemical

processing of a wide variety of materials. Phosgene can be made by the catalytic reaction between $CO$ and chlorine gas in the presence of a carbon catalyst. The chemical reaction is

$CO+C{l}_{2}COC{l}_2$

Suppose that you have measured the reaction products from a given reactor and found that they contained $3\mathrm{.}00$lbmol of chlorine, $10\mathrm{.}00$lbmol of phosgene, and $7\mathrm{.}00$lbmol of $CO.$ Calculate the extent of reaction, and using the value calculated, determine the initial amounts of $CO$ and $C{l}_2$ that were used in the reaction.

$**5\mathrm{.}2\mathrm{.}6$ Read problem $5\mathrm{.}2\mathrm{.}3$ again. Suppose that you have measured the reaction products from a given reactor and found that they contained $3\mathrm{.}00kg$ of chlorine, $10\mathrm{.}00kg$ of phosgene, and $7\mathrm{.}00kg$ of CO$.$ Calculate the following:

a$.$ The percent excess reactant used

b$.$ The percentage conversion of the limiting reactant

c$.$ The kilogram moles of phosgene formed per kilogram mole of total reactants fed to the reactor