Saponification Flashcards
Uses of esters
Used by plants and animals to store energy
What is glyceryl tristearate/ propane-1,2,3-triol made from
Stearic acid and glycerol
Name for soap
Sodium stearate
Equation for soap
Glycerol tristearate + sodium hydroxide —> sodium stearate + glycerol
What is the glycerol used for
The manufacture of explosive nitroglycerine
How does soap work
The non-polar C17H35 dissolves non-polar substances like oil and grease
The polar -COO- Na+ dissolves the salts in sweat
Purpose of ethanol
Solvent for lard
Refluxing
A laboratory technique in which a liquid is boiled in a container, attached to a vertical condenser that is open to the atmosphere
Purpose of refluxing
Prevents flask boiling dry
Allows organic reactions sufficient time to take place
Maximise yield of soap
No loss of ethanol
Boiling point of Ethanol
78 degrees
Why is brine used
Soap does not dissolve in it and is precipitated
Test for soap
Forms a lather
