Chapter 13, Problem 98SCQ

Interpretation Introduction

Interpretation The reasons why methanol and ethanol are soluble in water whereas octanol is poorly soluble have to be determined.

Concept introduction:

‘Like dissolves like’ principle said that polar compounds including ionic compound should be more soluble in polar solvent. Likewise, non-polar compound should be more soluble in non-polar solvent. Other hand, compounds with similar intermolecular force capability to soluble in one another because solute-solvent interactions are similar signification to the solute-solute interaction.

‘ The set of repulsive and attractive force between molecules that result from the polarity between neighboring molecules is represented as intermolecular force. There are four types of intermolecular forces:

• Hydrogen bonding
• London dispersion force
• Ion – dipole force
• Dipole – Dipole force

Hydrogen bond: Hydrogen is bonded to strong electronegative atom like oxygen, nitrogen etc.