Worksheet: Cryoscopy and Ebullioscopy
In this worksheet, we will practice calculating the molar mass of a solute based on its effect on the melting or boiling point of the solvent.
Why are soaps useful for cleaning?
- ASoaps form a colloid this causes the materials to swell and become less sticky, allowing them to be removed by water.
- BSoaps are amphiphilic molecules that help emulsify hydrophobic substances, allowing them to be removed by water.
- CSoaps lower the viscosity of water. This allows it to penetrate hydrophobic substances more easily, breaking them into smaller particles that can be mechanically removed.
- DSoaps are very reactive and decompose grease into smaller particles that can be dissolved by water.
- ESoap molecules function as “molecular sandpaper”: the hydrophobic tails of the molecules are inserted between molecules of an insoluble substance, mechanically separating them into smaller particles that can be dissolved by water.