Chapter 11, Problem 11.52SP

(a)

Interpretation Introduction

Interpretation:

Among the given solutions which one is more concentrated has to be identified.

Concept introduction:

The concentration of solution can be defined in terms of molarity as the moles of the solute to the volume of the solution.

$\text{Molarity}\text{(in}\text{M)}\text{=}\frac{\text{moles}\text{of}\text{solute}\text{(in}\text{moles)}}{\text{volume}\text{of}\text{solution}\text{(in}\text{litres)}}$

The mass percentage of a compound can be defined as the ratio taken by the calculated mass to the total mass of a compound by 100.  It can be given by the formula

$\text{Average}\text{mass}\text{percentage}\text{=}\frac{\text{Caclulated}\text{mass}}{\text{Total}\text{mass}}\text{×}\text{100}$

(b)

Interpretation Introduction

Interpretation:

Among the given solutions which one is more concentrated has to be identified.

Concept introduction:

Molality of a solution also called as molal concentration can be defined as the mass of solute in grams to the mass of the solvent in kilograms. It can be given by the equation,

$\text{Molality}\text{(mol}{\text{kg}}^{\text{-1}}\text{)}\text{=}\frac{\text{Mass}\text{of}\text{solute}\text{(in}\text{g)}}{\text{Mass}\text{of}\text{solvent}\text{(in}\text{kg)}}$