Hard water and soft soap: Dependence of soap performance on water hardness. A class demonstration

Journal of Chemical Education

Volumn 82, Issue 2, 2005, Pages 257-259

  Osorio, Viktoria K L ^a   de Oliveira, Wanda ^a   El Seoud, Omar A ^a   Cotton, Wyatt ^b   Easdon, Jerry ^c  

^a UNIVERSITY OF SÃO PAULO   (Brazil)

^b Cincinnati State Technical and Community College   (United States)

^c Campus Minister and the Director of the Institutional Quality Initiative   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DEMONSTRATIONS; SOAPS (DETERGENTS); SOLUTIONS; WATER;

COMMERCIAL SOAP BARS; SOAP FORMULATION; WATER HARDNESS;

PHYSICAL CHEMISTRY;

EID: 13244267029     PISSN: 00219584     EISSN: None     Source Type: Journal    
DOI: 10.1021/ed082p257     Document Type: Article

References (19)

1. ANEEL - Monitoramento da qualidade das águas no Brasil (Monitoring the quality of Brazilian waters), http://www.mma.gov.br/port/srh/ acervo/publica/doc/oestado/texto/175-184.html (accessed Oct 2004).
2. Hill, G. C.; Holman, J. S. Chemistry in Context, 4th ed.; Nelson: London, 1995; pp 553, 562-563.
3. Seager, S. L.; Slabaugh, M. R. Chemistry for Today: General, Organic, and Biochemistry, 2nd ed.; West: New York, 1994; p 511.
4. (a) Spangler, W. G. In Detergency: Theory and Test Methods, Part I; Cutler, W. G., Davis, R. C., Eds.; Marcel Dekker, New York, 1972; pp 414-449.
5. (b) Sosis, P. In Detergency: Theory and Test Methods, Part II; Cutler, W. G., Davis, R. C., Eds.; Marcel Dekker: New York, 1975; pp 625-658.
6. Hard Water - To Soften or Not to Soften. http://www.ca.uky.edu/agc/ pubs/ip/ip7/ip7.htm (accessed Oct 2004).
7. Hill, J. W.; Petrucci, R. H. General Chemistry; Prentice Hall: New Jersey, 1996; p 299.
8. Snyder, C. H. The Extraordinary Chemistry of Ordinary Things, 3rd ed.; J. Wiley: New York, 1998; p 337.
9. Yappert, M. C.; DuPre, D. B. J. Chem. Educ. 1997, 74, 1422-1423.
10. Coker, E. N.; Davis, P. J.; Kerkstra, A.; van Bekkurn, H. J. Chem. Educ. 1999, 76, 1417-1419.
11. Kotz, J. C.; Treichel, P., Jr. Chemistry and Chemical Reactivity, 4th ed.; Saunders: New York, 1999; pp 1026-1027.
12. Hill, J. W.; Kolb, D. K. Chemistry for Changing Times, 7th ed.; Prentice Hall: New Jersey, 1995; pp 560-570.
13. Selinger, B. Chemistry in the Marketplace, 5th ed.; Harcourt Brace: London, 1998; pp 43-51.
14. Freemantle, M. Chemistry in Action, 2nd ed.; Macmillan: London, 1995; pp 253-255,668-670.
15. Snyder, C. H. The Extraordinary Chemistry of Ordinary Things, 3rd ed.; J. Wiley: New York, 1998; pp 323-339.
16. Donovan, T. R.; Poole M. C.; Yack, D. J. Chemicals in Action, 2nd ed.; Holt, Rinehart and Winston: Toronto, 1995; pp 350-351.
17. Stoker, H. S. Chemistry, A Science for Today; Macmillan: London, 1989; pp 384, 669-671.
18. Botkin, D. B.; Keller, E. A. Environmental Science: Earth as a Living Planet, 3rd ed.; J. Wiley: New York, 2000; pp 420-422.
19. Shakhashiri, B. Z. Laboratory Manual; General, Organic, and Biological Chemistry; Structures of Life; Benjamin/Cummings: Redwood City, CA, 2002; Vol. 3, Section 9.38, pp 345-347.