Chapter 9, Problem 9.83SP

(a)

Interpretation Introduction

Interpretation:

The mole-fraction of ${\text{Cl}}_{\text{2}}$ in the gas has to be calculated.

Concept Introduction:

Partial Pressure:

Dalton’s law of partial pressure states that “the total pressure (P) of the mixture is equal to the sum of the partial pressures ${\text{(P}}_{\text{A}}{\text{, P}}_{\text{B}}{\text{, P}}_{\text{C}}\mathrm{.....}\text{)}$ of all the component gases $\text{(A, B, C}\mathrm{......}\text{)}$  present in the mixture” and is given as,

${\text{P = P}}_{\text{A}}{\text{ + P}}_{\text{B}}{\text{ + P}}_{\text{C}}\text{ + }\mathrm{.......}$

The ideal gas law for the individual gas component A is given as,

${\text{P}}_{\text{A}}{\text{V = n}}_{\text{A}}\text{RT}$

Mole-fraction:

The ratio of number of moles of that part to the total number of moles of that part in the given solution.

${\text{X}}_{\text{A}}\text{=}\frac{\text{moles}\text{of}\text{A}}{\text{moles}\text{of}\text{A+moles}\text{of}\text{B+}\mathrm{.......}}$

${\text{X}}_{\text{B}}\text{=}\frac{\text{moles}\text{of}\text{B}}{\text{moles}\text{of}\text{A+moles}\text{of}\text{B+}\mathrm{.......}}$

(b)

Interpretation Introduction

Interpretation:

The number of grams of $\text{NaCl}$ used in the reaction has to be calculated.

Concept Introduction:

Ideal gas equation is an equation that is describing the state of an imaginary ideal gas.

$\text{PV}\text{=}\text{n RT}$

Where,

P is the pressure of the gas

V is the volume

n is the number of moles of gas

R is the universal gas constant $\text{(R=0}{\text{.0821LatmK}}^{\text{-1}}{\text{mol}}^{\text{-1}})$

T is the temperature