The Gibbs Equation Experimental Results

8a Typical Variations of Surface Tension in Aqueous Solutions 

14 Three types of variation of 7 with c for aqueous solutions (1) simple organic solutes, (2) simple electrolytes, and (3) amphipathic solutes. 

For the limit as c - 0, curve 1 may be presented by the equation of a straight line  

Recalling the definition of r2 provided by Equation (43), we see that Equation (52) may also be written 

The reciprocal of this gives the area of surface occupied by a mole of adsorbed molecules. Division by Avogadro s number converts the reciprocal of r2 into a value for a  

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