Phosgenite, a lead compound with the formula Pb2 Cl2 CO3 is found in Egyptian cosmetics. Phosgen

Phosgenite, a lead compound with the formula Pb2 Cl2 CO3 is...

Phosgenite, a lead compound with the formula $\mathrm{Pb}_{2} \mathrm{Cl}_{2} \mathrm{CO}_{3}$ is found in Egyptian cosmetics. Phosgenite was prepared by the reaction of $\mathrm{PbO}, \mathrm{NaCl},$ and $\mathrm{CO}_{2} .$ An unbalanced expression of the reactant mixture is $$\mathrm{PbO}(s)+\mathrm{NaCl}(a q)+\mathrm{H}_{2} \mathrm{O}(\ell)+\mathrm{CO}_{2}(g) \rightarrow $$ $$\quad\quad\quad\quad\quad \mathrm{Pb}_{2} \mathrm{Cl}_{2} \mathrm{CO}_{3}(s)+\mathrm{NaOH}(a q)$$ a. Balance the equation. b. How many grams of phosgenite can be obtained from $10.0 \mathrm{g} \mathrm{PbO}$ and $10.0 \mathrm{g} \mathrm{NaCl}$ in the presence of excess water and $\mathrm{CO}_{2} ?$ c. Phosgenite can be considered a mixture of two lead compounds. Which compounds appear to be combined to make phosgenite?

Phosgenite, a lead compound with the formula $\mathrm{Pb}_{2} \mathrm{Cl}_{2} \mathrm{CO}_{3}$ is found in Egyptian cosmetics. Phosgenite was prepared by the reaction of $\mathrm{PbO}, \mathrm{NaCl},$ and $\mathrm{CO}_{2} .$ An unbalanced expression of the reactant mixture is
$$\mathrm{PbO}(s)+\mathrm{NaCl}(a q)+\mathrm{H}_{2} \mathrm{O}(\ell)+\mathrm{CO}_{2}(g) \rightarrow $$
$$\quad\quad\quad\quad\quad \mathrm{Pb}_{2} \mathrm{Cl}_{2} \mathrm{CO}_{3}(s)+\mathrm{NaOH}(a q)$$
a. Balance the equation.
b. How many grams of phosgenite can be obtained from $10.0 \mathrm{g} \mathrm{PbO}$ and $10.0 \mathrm{g} \mathrm{NaCl}$ in the presence of excess water and $\mathrm{CO}_{2} ?$
c. Phosgenite can be considered a mixture of two lead compounds. Which compounds appear to be combined to make phosgenite?

Key Concepts

Chemical Compound Composition

This concept involves understanding the chemical formula of a compound, which reflects its composition and how it can be viewed as a combination of simpler chemical units. In some cases, complex compounds can be interpreted as being formed from the combination or mixing of simpler component compounds, which aids in analyzing their structure and origin.

Molar Mass and Mass-to-Mole Conversions

Calculating the molar mass of substances and converting between mass and moles are central techniques in chemistry. These conversions allow one to use balanced chemical equations to relate the masses of reactants to the masses of products, which is essential in yield calculations.

Balancing Chemical Equations

This concept involves adjusting the coefficients of reactants and products in a chemical reaction so that the number of atoms for each element is conserved. It is crucial because chemical reactions obey the law of conservation of mass, and a balanced equation accurately represents the stoichiometric relationships between all species involved.

Stoichiometry and Limiting Reagents

Stoichiometry is the quantitative relationship between reactants and products in a chemical reaction. When the amounts of reactants are given, it is necessary to determine which reactant limits the reaction (the limiting reagent) to predict the maximum amount of product that can be formed.