Soaps are sodium or potassium salts of higher fatty acids like stearic, palmitic and oleic acids can be either saturated or unsaturated. They contain a long hydrocarbon chain of about carbon with one carboxylic acid group as the functional group. A soap molecule a tadpole shaped structure, whose ends have different polarities. At one end is the long hydrocarbon chain that is non-polar and hydrophobic, i. At the other end is the short polar carboxylate ion which is hydrophilic i. When soap is shaken with water it becomes a soap solution that is colloidal in nature.
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Aim is to study the effect of addition of sodium carbonate on foaming capacity of a soap. Soaps and detergents are cleaning ingredients that are able to remove oil particles from surfaces because of their unique chemical properties.
Soaps are created by the chemical reaction of a jetty acid with on alkali metal hydroxide. In a chemical sense soap is a salt made up of a corboxylix acid and an alkali like sodium of potassium.
The cleaning action of soap and detergents is a result of thrill, ability to surround oil particles on a surface and disperse it in water. Bar soap has been used for centuries and continues to be an important product for batching and cleaning.
It is also a mild antiseptic and ingestible antidote for certain poisons. SOAP Soap is a common term for a number of related compounds used as of washing clothes or bathing.
Soap is produced by a saponification or basic hydrolysis reaction of a fat or oil. Currently sodium carbonate or sodium hydroxide is used to neutralize the fatty acid and convert it to the salt.. Although the reaction is shown as one step reaction, it is in fact two steps.
The net effect as that the ester bonds all broken. The glycerol turns back into an alcohol. The fatty acid is turned into a salt due to the presence of abasic solution of NaoH. In the carboxyl group, one oxygen now has a negative charge that attacts the positive sodium ion.
A molecule of soap consists of two parts. The type of fatty acid and length of the carbon chain determines the unique properties of various soaps. Tallow or animal fats give plimarily sodium stearate 18 carbons a very hard, insoluble soap. Fatty acids with longer chains are even more insoluble.
As a matter of fact, 3inc stearate is used in talcum powders because it is water repellent. Coconut oil is a source of lauric acid 12 carbons which can be made into sodium lourate.
This soap is very soluble and will lather easily even in sea water. Fatty acids with only 10 or fewer carbons are not used in soaps because they irritate the skin and have objectionable odors.
Calcium and magnesium ions present in the tap water interfere in the foaming capacity of soap. These ions combine with soap and form insoluble calcium and magnesium salts which get precipitated. Therefore, the presence of these ions effect the foaming capacity of soap and hence their cleaning capacity. When Na2CO3 is added to the tap water, calcium and magnesium ions gets precipitated as their carbonates in the presence of Na2CO3.
Foaming capacity of the water increases. Weigh accurately 0. Add 50ml of distilled water and wolm to dissolve till clear solution is obtained. Take three 20ml test tubes and label them as 1,2 and A,B and C. Cork test tube A tightly and shake vigorously for 1minute. Place the test tube on the test tube stand and start the stop watch immediately. Note the taken for the disappearance of foam. Repeat the same procedure for test tube B and C, rate the time taken for the disappearance of foam.
Published on Mar 02,
Chemistry Project on Foaming Capacity of Soaps
Foaming Capacity of Soaps investigatory projects chemistry class 12 cbse
foaming capacity of soap
Submitted by Editor. Anita Thomas, my grateful thanks to her for the able teaching and guidance. I thank Mr. Harsha Kumar, the Lab assistant for his cooperation. Soaps and detergents remove dirt and grease from skin and clothes. But all soaps are not equally effective in their cleaning action.
Aim is to study the effect of addition of sodium carbonate on foaming capacity of a soap. Soaps and detergents are cleaning ingredients that are able to remove oil particles from surfaces because of their unique chemical properties. Soaps are created by the chemical reaction of a jetty acid with on alkali metal hydroxide. In a chemical sense soap is a salt made up of a corboxylix acid and an alkali like sodium of potassium.