Submitted by Editor
CHEMISTRY PROJECT
(FOR PARTIAL FULFILMENT OF AISSCE-2010)
ON
FATTY MATERIAL OF DIFFERENT SOAP SAMPLES
GUIDED BY : SUBMITTED BY :
MR.HEMANT PATHAK AYUSH JAIN
(PGT CHEMISTRY) (CLASS-XII)
VIVEKANAND VIDYA VIHAR
MARAL SAROVAR, NIMRANI
DISTT. - KHARGONE(M.P.)
VIVEKANAND VIDYA VIHAR
MARAL SAROVAR
Certificate
This is to certify that Master Ayush Jain of class XII, has completed his project on Finding The Percentage [%] Of Fatty Material On Different Soap Samples.
He has successfully prepared this project report in the
Chemistry laboratory of our school.
This project may be considered as partial fulfilment of AISSCE 2009-2010 conducted by the Central Board Of Secondary Education, Delhi.
Mr.Hemant Pathak
External Examiner Internal Examiner
Mr.K.K.Mukherjee
Principal
ACKNOWLEDGEMENT
It is my humble pleasure to acknowledge my deep sense of gratitude to Chemistry teacher Mr.Hemant Pathak for his valuable support, constant help and guidance at each and every stage, without which it wouldn’t have been possible to complete this project.
I am thankful again to Mr.Hemant Pathak of Chemistry department for their co-operation in printing this project.
I am also thankful to Mrs. Kshipra Shukla, our Librarian for the help provided in referring the required amount of books.
I also register my sense of gratitude to our Principal Mr.K.K.Mukherjee for his immense encouragement that has made this project successful.
Ayush Jain
Class XII
CONTENTS
AIM
To find and calculate the percentage of fatty material in different soap samples.
PROCEDURE
percentage of fatty material has to be determined.
3. Add 10 to 12 drops of HCl in each solution and
heat the solution for 5 to 10 min.
forming upper layer and how by filter paper are
weighed for titration.
Soap - Soap are the sodium or potassium salt of higher fatty acids. The fatty acid contains long chain of 16-18 carbon atoms.
Structure Of Soap -
Soap contains two parts:
Soap may be represented as :
CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2- CH2-CH2-CH2-CH2-CH2-COONa
Soap are also made from animal fats and vegetable oil. Fats and oils are ester of higher fatty acids are called Glyceroides. When oils and fats are heated with a solution of NaOH, they break down to sodium salt of respective fatty acid soap and glycerol. This process of making soap by hydrolysis of fats and oil with alkalis is called saponification. The soap is separated from the solution by a addition of common salt NaCl. Salts is added in the soap solution to decrease the solubility of soap due to which soap separates out from the solution in the form of solid and starts floating on the surface. The crust of soap thus formed is removed and put it in moulds to get soap cakes. The solution left behind contains glycerol and NaCl.
Limitation Of Soap –
Soap is not suitable for washing clothes with hard water because of the following reasons:
2C17H35COONA + MgCl2 - (C17H35COO)2 Mg + 2NaCl
2C17H35COONA + MgCl2 - (C17H35COO)2 Ca + 2NaCl
Therefore a lot of soap is washed if water is hard.
Cleansing Action Of Soap –
The dirt in the cloth is due to presence of dust particle in fat or grease, which sticks to the cloth. When the dirty cloth is dipped in soap or detergent solution the soap and dust particle come in contact with each other the non polar tails of the soap begin to dissolve in non-polar oil or grease while the polar head part remains directed in water. As more particle enter the grease each fat or oil surrounde by a number of negatively charge polar head and the similar charge repel each other. The oil or grease droplets break off and are still surrounded by negatively charged polar head of the soap molecule. As a result the cloth get free from the dirt and the droplets are washed away with water.
Difference –
SOAP | DETERGENTS |
1) Soap are sodium salt of long chain carboxylic acids. 2) Soap are not suitable for washing purpose when water is hard. 3)Soap have relatively weak cleansing action. |
1) Synthetic detergents are sodium salts of long chain benzene sulphonic acid. 2) Synthetic detergent can be used for washing even when water is hard. 3 )Synthetic detergent have a strong cleansing action. |
OBSERVATION
S.NO.
|
NAME OF SOAP
|
WEIGHT OF FILTER PAPER (A) |
WEIGHT OF FILTER FATTY MATERIAL (B) |
FATTY MATERIAL (B-A) |
PERCENTAGE [ % ] |
1.
2.
3.
4. |
Santoor
Lux
Lux Int.
Lifeboy |
0.3856
0.2956
0.3203
0.4701 |
7.5856
7.5956
7.2701
7.2701 |
7.2
7.3
7.5
6.8 |
72 %
73 %
75 %
68 % |
CONCLUSION
Soap contain alkali matter, which affects our skin and even skin may crack. To maintain the oily and moisture balance on our skin, fatty material required in soap. In general the fatty matter in soap is approximately 70% to 80% fatty matter below 70% made our skin dry, rough and skin may crack where as highest percentage [%] of fatty matter above 80% made the soap sticky and oily and washing become very difficult. From the table it is clear that the Lux international is the best soap for bathing purpose because it contain large amount of TFM or maximum percentage[%] of TFM.
BIBLIOGRAPHY
ü Introduction of Chemistry
by Comprehensive.
ü The complete reference Chemistry
by S.Chand.
ü Chemistry tips by Nitesh Gupta.
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