The appropriate molar mass of the glycerol has to be calculated. Concept Introduction: Boiling point is the temperature at which liquid turns into a gas. Example: boiling point of water is 100°C . That is water changes from liquid phase to gas phase at temperature 100 o C . ΔT b = T b - T b ° . Where, ΔT b − Change in boiling point. T b − Boiling point of the solution. T b ° − Boiling point of pure solvent. The Boiling point elevation (ΔT b ) is indicated as ΔT b = K b m Where, ΔT b − Change in boiling point. K b − Molal boiling point constant. m − Molality of the solution. Molecular formula of a compound is derived from empirical formula mass and molar mass of the compound as, m o l a r m a s s e m p i r i c a l m o l a r m a s s .

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Chapter 13, Problem 71QRT

Interpretation Introduction

Interpretation:

The appropriate molar mass of the glycerol has to be calculated.

Concept Introduction:

Boiling point is the temperature at which liquid turns into a gas. Example: boiling point of water is $100°C$ . That is water changes from liquid phase to gas phase at temperature $100oC$ .

$ΔTb= Tb- Tb°$ .

Where,

$ΔTb−$ Change in boiling point.

$Tb−$ Boiling point of the solution.

$Tb°−$ Boiling point of pure solvent.

TheBoiling point elevation $(ΔTb)$ is indicated as $ΔTb= Kbm$

Where,

$ΔTb−$ Change in boiling point.

$Kb−$ Molal boiling point constant.

$m−$ Molality of the solution.

Molecular formula of a compound is derived from empirical formula mass and molar mass of the compound as,

$molar massempirical molar mass .$

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