Soaps, Soapless Detergents And Emulsions Flashcards
1
Q
How are soaps made?
A
By hydrolysing fats and oils, using solutions of sodium hydroxide or potassium hydroxide
2
Q
What is an emulsion?
A
An emulsion contains small droplets of one liquid dispersed in another liquid
3
Q
What does hard water contain?
A
Hard water contains a lot of Ca^2+ or Mg^2+ ions.
4
Q
How does soap react with hard water?
A
Ca^2+ or Mg^2+ ions react with soaps to form insoluable salts called scum
5
Q
Oils harden into fats when:
A
When the double bond is reacted with hydrogen
This is an addition reaction
