Chapter 16, Problem 16.61P

Interpretation Introduction

Interpretation:

A$1.0m_c$ aqueous solution of sucrose is same as $1.0m$ aqueous solution of sucrose or not has to be determined.  Also a $1.0m_c$ aqueous solution of sodium chloride is same as $1.0m$ aqueous solution of sodium chloride or not has to be determined.

Concept Introduction:

Molality:

Molality is defined as the number of moles of solute per $1000g$ or one kilogram of solvent.  Mathematically, it can be represented as given below.

  $Molality=\frac{Molesofsolute}{1kgofsolvent}$

The colligative molality of a solution is the product of number of solute particles per formula unit and molality of solution.  This can be represented as given below.

  $m_c=i\times m$

Where, $i$ is the number of solute particles produced per formula unit when the solute is dissolved in the solvent.