Chapter 5, Problem 136AE

Interpretation Introduction

Interpretation: The partial pressure of $\text{NO}$ in the given reaction is needed to be determined.

Concept introduction:

• According to Boyle’s law of gas molecules,

  If the volume of gases in a container is increased then the pressure will decrease at constant temperature and number of moles.

  Equation for Boyle’s law is,

  ${\text{P}}_{\text{initial}}{\text{V}}_{\text{initial}}\text{=}{\text{P}}_{\text{final}}{\text{V}}_{\text{final}}$

• Mole ratios between the reactant and products of a reaction are depends upon the coefficients of respective reactant in a balanced chemical equation.

• Limiting reagent: limiting reagent is a reactant, which consumes completely in the chemical reaction. The quantity of the product depends on this limiting reagent, it can be determined with the help of balanced chemical equation for the reaction.

• According toideal gas law: the pressure of gas is directly proportional to the number of moles of gas at constant volume and temperature.

$\frac{\text{P}}{\text{n}}\text{=}\frac{\text{RT}}{\text{V}}$ , P and n are proportional.

Mathematically, for two gases (1 and 2) at constant V and T,

$\frac{{\text{P}}_{\text{1}}}{{\text{n}}_{\text{1}}}\text{=}\frac{{\text{P}}_{\text{2}}}{{\text{n}}_{\text{2}}}\Rightarrow \frac{{\text{P}}_{\text{1}}}{{\text{P}}_{\text{2}}}\text{=}\frac{{\text{n}}_{\text{1}}}{{\text{n}}_{\text{2}}}$