SOAPS AND
DETERGENTS
INTRODUCTION
Soaps And Detergents
are used for washing.
It dissolves dirt, but some
dirt will not dissolve in water.
Soaps and detergents help water to
remove dirt.
WHAT IS A SOAP.?
Soap is a sodium salt or Potassium
salt of long chain fatty acids that
has cleansing action in water.
Some examples of
soaps are :
Sodium stearate
Sodium Oleate
Sodium Palmitate
Reaction of soap with
sodium hydroxide:
Stearic acid
Sodium Stearate
(has properties of soap)
Sodium Palmitate (has
properties of soap)
Well, How do you think
soap is prepared.??
See how its prepared:
https://www.youtube.com/watch?feature=player_detai
lpage&v=iIApHZDdHPY
There’s something much easier than that..!!
http://video.about.com/candleandsoap/HomemadeSoap-From-Scratch.htm
GOT IT,FRIENDS..??
Now you can make soap at home itself..!!
CHEMICAL REACTION:
This is how
its done in
the lab..!!
How does soap clean..
Soap dissolves in water. A soap molecule has a long hydrocarbon
End and a short ionic end containing COONa+.The non-ionic
hydrocarbon end has the property to repel water. (hydrophobic
tail). The ionic end has the property to attract water. This end
attaches itself to water.(hydrophilic head). The hydrocarbon end
attaches to the dirt or grease to form structures called ‘micelles’
See how the dirt is removed..!!
Detergents are sodium salts of long chain
benzene sulphonic acid or sodium salts of long
chain alkyl hydrogen sulphate. A detergent
molecule consists of a large hydrocarbon
group that is non-ionic and a sulphonate (SO3Na+) or a sulphate (SO4- Na+) group that is
ionic.
DETERGENT, The king
and DIRT, The Slave..!!
Lets see how detergents
are prepared..
Follow this link..
https://www.youtube.com/watch?feature=player_detailpage&v=
6KVIMkOyoSM
So easy to prepare detergent rite..!!
SOAPS V/S DETERGENTS
DISADVANTAGES
Detergents are not biodegradable. They pollute
water and soil.
HOPE YOU ENJOYED
LEARNINGTHE LESSON..!!