Saturday, March 21, 2015

Foaming capacity of samples of soap, Science GSEB for std 8 to 12

Soap foaming capacity practical









AIM :    To compare the foaming capacity of three samples of soap.

THEORY :   On boiling vegetable oil or fats with caustic soda solution, sodium salt of fatty acids is obtained which is known as soap. Foaming capacity of different soaps are different from each other.

APPARATUS    :  Three big test tubes, measuring cylinder, stop watch, test tube stand, Vegetable oil, Caustic Soda, Sodium Salt, Fatty acid, Soaps, Distilled water.

CHEMICALS    : Three different types of sample of soap and distilled water.
Soap foaming capacity practical 
Soap foaming capacity

Observation
( i)  The time in which the foam just disappears in test tube (1) :      minute.
( ii)  The time in which the foam just disappears in test tube(2) :      minute.
( iii) The time in which the foam just disappears in test tube(3):       minute.

Conclusion  :


Uses : The foaming is less in the hard water. The foaming capacity of detergent is more than the foaming capacity of soap.

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