FR expt 3 surface tension

FR expt 3 surface tension - Mapa Institute of Technology...

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M170L – A31 info: y, 2011 [email protected] e tension, tensiometer, bulk solute concentration, micelles Mapúa Institute of Technology School of Chemical Engineering, Chemistry, Biological Engineering and Materials Science Engineering Surface Tension of Liquids Austria, Meynard 1 Baniqued, Paul Dominick E. 2 1 Professor, School of Chemical Engineering, Chemistry, Biological Engineering and Materials Science Engineering, Mapua Institute of Technology; 2 Student, CHM170/A31 Molecular Biology and Biotechnology Laboratory 2, Biological Engineering and Chemistry, Mapua Institute of Technology ABSTRACT Surface tension explains the relative strong forces on the surface of liquids. It is a property which causes the surface of a liquid to be attracted to another surface which is that of another portion of the liquid itself. The surface tension of n-butanol solutions of different concentrations were measured in this experiment with the use of a Du Nuoy tensiometer. The surface tension decreases from 88.67 dynes/cm to 40.47 dynes/cm as concentrations of n-butanol in solution increases from 0 mole/Liter to 0.80 mole/Liter. This explains the property of bulk solutes affecting the surface tension of aqueous solutions. INTRODUCTION Surface tension is a property of the surface of a liquid. It is what causes the surface portion of liquid to be attracted to another surface, such as that of another portion of liquid (as in connecting bits of water or as in a drop of mercury that forms a cohesive ball).Surface tension is caused by cohesion (the attraction of molecules to like molecules). Since the molecules on the surface of the liquid are not
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This note was uploaded on 04/27/2011 for the course CHM 170 taught by Professor Ng during the Spring '11 term at Mapúa Institute of Technology.

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FR expt 3 surface tension - Mapa Institute of Technology...

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