This is to certify that Mr. Pratyush Mishra of Class XI ‘B’ has satisfactorily completed the project on “Foaming Capacity of Soap” under the guidance of Sir Francis. Amount of Bibliography Foaming Capacity of Soap . CHEMISTRY INVESTIGATORY PROJECT FOAMING CAPACITY OF SOAP Under The. easy project for chemistry class 12th. This solution is called Foaming capacity of that soap sample will be greater in which case it takes longer.

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This is to certify that Mr. Soaps are sodium or potassium salts of higher fatty capacty 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.

foaming capacity of soap

When soap is shaken with water it becomes a soap solution that is colloidal in nature. Agitating it tends to concentrate the solution on the surface and causes foaming.

This helps the soap molecules make a unimolecular film on the surface of water and to penetrate the fabric. The long non-polar end of a soap molecule that are hydrophobic, gravitate towards and surround the dirt fat or oil with dust absorbed in it.

The short polar foamihg containing the carboxylate ion, face the water away from the dirt. Cleansing action of soaps decreases in hard water. Hard water contains Calcium and magnesium ions which react with sodium carbonate to foaking insoluble carbonates of higher fatty acids. The foaming capacity of a soap sample depends upon the nature of soap and its concentration.


This can be compared for various samples of soaps by taking the same concentration of solution and shaking them. The foam is formed and the time taken for disappearances of foam in all cases is compared.

The lesser the time taken by a solution for the disappearance of foam, the lower is its foaming capacity. Five conical flasks ml each are taken and numbered 1 to 5. In each of these flasks equal amounts say 5 gm of the given samples of soap shavings or granules are taken and 50 ml capaciyy distilled water is added.

Each conical flask is heated few minutes to dissolve all the soap completely. In a test-tube stand, five big clean and dry test tubes are taken capacith numbered 1 to 5 One ml of the five soap solution is then poured in the test tubes of corresponding number.

foaming capacity of soap

Test tube no 1 is chmistry shaken vigorously 5 times. The foam would be formed in the empty space above the container. Stop watch is started immediately and the time taken for the disappearance of foam is noted.

Similarly the other test tubes are shaken vigorously for equal number of times i. The lesser the time taken for the disappearance of foam, the lower is the foaming capacity.

Amount of each soap sample taken. Soap Sample Time taken seconds 1.

Chemistry Project on Foaming Capacity of Soaps

The soap for which the time taken for the disappearance of foam is highest has maximum foaming capacity and is the best quality soap among the soaps tested. Study the effect of the addition of Sodium Carbonate Washing Soda on the foaming capacity of different soap solutions. When sodium or potassium soaps are put into water containing calcium and magnesium ions Hard waterresults in formation of scum which applies grey appearance on the cloth.


Prokect achieve the same washing or cleaning action, more soap must be added. Hard water is water that has high mineral content mainly calcium and magnesium ions in contrast with soft water. Calcium usually enters the water as either calcium carbonate CaCO 3in the form of limestone and chalk, or calcium sulphate CaSO 4in the form or other mineral deposits.

Take three test tubes and add distilled water in first, tap water in second and third test tube. To above test tubes add soap solutions separately. Now shake first test tubes for formation of foam. Now start the stop watch to calculate time taken for disappearance of foam. Similarly, perform the experiment with other soap solutions. Record the observations in a tabular form.

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Water used Time taken seconds 1. Foaming capacity of soap in maximum in distilled water. The foaming capacity of soap increases on the addition of Sodium Carbonate. Comments 0 Trackbacks 0 Leave a comment Trackback No comments yet. Name required E-Mail will not be published required Website Subscribe to comments feed. Chemistry Project on Foaming Capacity of Soaps.

Foaming Capacity of Soaps This is to certify that Mr. To compare the foaming capacities of five different commercial chekistry. Comments 0 Trackbacks 0 Leave a comment Trackback.

E-Mail will not be published required. Subscribe to comments feed. Amount of each soap sample taken Amount of distilled water taken Chemistyr of each soap solution taken Volume of distilled water added.