How many grams of phosgenite can be obtained from 14.0 g of PbO and 14.0 g of NaCl in the presence of excess water and carbon dioxide?

Answer 1

This is a limiting reagent (LR) problem. We know that because amounts are given for more than one reactant.

Write the equation and balance it.
Convert grams PbO to mols. mols = grams/molar mass
Do the same for NaCl.

Using the coefficients in the balanced equation, convert mols PbO to mols phosgenite.
Do the same for mols NaCl to mols phosgenite.
It is likely that these two values will not agree which means one of them is wrong. The correct value in LR problems is ALWAYS the smaller value and the reagent responsible for the smaller number is the LR.

Now use the smaller value for mols and convert to grams. g = mols x molar mass.