Chapter 13, Problem 13.22QP

(a)

Interpretation Introduction

Interpretation:

The molality for the given solution with given density values should be calculated.

Concept Introduction:

Molality$\left(m\right)$: The concentration for solutions is expressed in terms of molality. Molality is the number of moles of solute present in one kilogram of solvent. Molality is estimation of moles in relationship with solvent in the solution.

$\text{Molality (m) =}\frac{\text{Number}\text{of}\text{moles}\text{of}\text{solute}}{\text{kilograms}\text{of}\text{solvent}}$

(b)

Interpretation Introduction

Interpretation:

The molarity for the given solution with given density values should be calculated.

Concept Introduction:

Volume: A quantity of the substance which occupies three dimensional spaces within the container. The formula used to determine volume is,

$\text{Volume =}\frac{\text{mass}}{\text{density}}$

Molarity (M): The concentration for solutions is expressed in terms of molarity. Molarity is number of moles of the solute present in liter of the solution.

$\text{Molarity = }\frac{\text{No}\text{. of moles of solute}}{\text{Volume of solution in L}}$

(c)

Interpretation Introduction

Interpretation:

The volume of given solution that consists of $0.125mol$ ethanol should be determined.

Concept Introduction:

Volume: A quantity of the substance which occupies three dimensional spaces within the container. The formula used to determine volume is,

$\text{Volume =}\frac{\text{mass}}{\text{density}}$

Molarity (M): The concentration for solutions is expressed in terms of molarity. Molarity is number of moles of the solute present in liter of the solution.

$\text{Molarity = }\frac{\text{No}\text{. of moles of solute}}{\text{Volume of solution in L}}$