Chlorine gas reacts with fluorine gas to form chlorine...

Chlorine gas reacts with fluorine gas to form chlorine trifluoride. $$ \mathrm{Cl}_{2}(g)+3 \mathrm{~F}_{2}(g) \rightarrow 2 \mathrm{ClF}_{3}(g) $$ A $2.00 \mathrm{~L}$ reaction vessel, initially at $298 \mathrm{~K}$, contains chlorine gas at a partial pressure of $337 \mathrm{mmHg}$ and fluorine gas at a partial pressure of $729 \mathrm{mmHg}$. Identify the limiting reactant and determine the theoretical yield of $\mathrm{ClF}_{3}$ in grams.

Chlorine gas reacts with fluorine gas to form chlorine trifluoride.
$$
\mathrm{Cl}_{2}(g)+3 \mathrm{~F}_{2}(g) \rightarrow 2 \mathrm{ClF}_{3}(g)
$$
A $2.00 \mathrm{~L}$ reaction vessel, initially at $298 \mathrm{~K}$, contains chlorine gas at a partial pressure of $337 \mathrm{mmHg}$ and fluorine gas at a partial pressure of $729 \mathrm{mmHg}$. Identify the limiting reactant and determine the theoretical yield of $\mathrm{ClF}_{3}$ in grams.

Key Concepts

Limiting Reactant

The limiting reactant is the species in a chemical reaction that is completely consumed first, thereby limiting the amount of product that can be formed. Identifying the limiting reactant involves comparing the mole ratio of the reactants used to the mole ratio required by the balanced chemical equation.

Theoretical Yield

The theoretical yield of a reaction is the maximum amount of product that could be generated as predicted by the stoichiometry of the balanced chemical equation when the limiting reactant is completely consumed. It is derived by calculating the product moles from the limiting reactant and converting that to a mass, taking into account the molar mass of the product.

Stoichiometry

Stoichiometry is the quantitative relationship between reactants and products in a chemical reaction as expressed by the balanced chemical equation. It provides the necessary conversion factors between moles of reactants and moles of products, allowing for the calculation of yields, required amounts, or limitations in a reaction.

Ideal Gas Law

The ideal gas law, expressed as PV = nRT, relates the pressure, volume, temperature, and moles of a gas. In reactions involving gases, this law is used to calculate the number of moles from given pressure, volume, and temperature conditions, which is essential for stoichiometric computations in gaseous systems.

Mole Concept

The mole concept is a fundamental principle in chemistry that relates the mass of a substance to the number of atoms or molecules it contains, using Avogadro’s number. It underpins the conversion between mass, moles, and number of particles, which is critical when performing stoichiometric calculations, particularly in reactions involving gases and determining yields.

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