The reaction occurs in a closed container: A(g)+2 B(g) →2 C(g) A reaction mixture initially con

step 1 According to ideal gas law, PV equals two in Artie. When the pressure on temperature constant, t

The reaction occurs in a closed container: A(g)+2 B(g) →2...

The reaction occurs in a closed container: $$ \mathrm{A}(g)+2 \mathrm{~B}(g) \rightarrow 2 \mathrm{C}(g) $$ A reaction mixture initially contains $1.5 \mathrm{~L}$ of $\mathrm{A}$ and $2.0 \mathrm{~L}$ of $\mathrm{B}$. Assuming that the volume and temperature of the reaction mixture remain constant, what is the percent change in pressure if the reaction goes to completion?

The reaction occurs in a closed container:
$$
\mathrm{A}(g)+2 \mathrm{~B}(g) \rightarrow 2 \mathrm{C}(g)
$$
A reaction mixture initially contains $1.5 \mathrm{~L}$ of $\mathrm{A}$ and $2.0 \mathrm{~L}$ of $\mathrm{B}$. Assuming that the volume and temperature of the reaction mixture remain constant, what is the percent change in pressure if the reaction goes to completion?

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Key Concepts

Stoichiometry and Limiting Reagents

Stoichiometry involves interpreting a balanced chemical equation to determine the mole ratios of reactants and products. In many reactions, the concept of a limiting reagent is key; it is the reactant that will be completely consumed first, thus determining the extent of the reaction and the quantity of product formed.

Ideal Gas Law

The ideal gas law (PV = nRT) establishes a relationship between pressure, volume, temperature, and the number of moles of a gas. When the volume and temperature of a gas remain constant, the pressure is directly proportional to the number of moles, making it possible to infer changes in pressure from changes in the mole count.

Pressure Change Calculation

Calculating the percentage change in pressure involves determining the initial and final total number of moles in the system and using the proportionality between pressure and moles under constant volume and temperature conditions. This process usually includes finding the difference between initial and final moles and then expressing that difference as a percentage of the initial moles.

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