Class: BE210
Group: W2
Members: FACILITATOR Nicolas Fawzi,  TIME & TASK KEEPER Jonathan Hong,  SCRIBE Wynter Duncanson, PRESENTER Amy Ros
Date: 5/12/00
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Abstract:

This project, similar to Experiment #2, was designed to calculate the equivalent conductance of a KNO3 electrolyte solution at infinite dilution within ± 0.5 S-cm2/mol of the infinite dilution literature value of 144.9 S-cm2/mol.  Method and technique of data collecting and calculations were refined to achieve the desired results.  Refined techniques included a statistical method of determining the linear range, careful selection of volumetric flasks and more accurate solution creation. Experimental data produced results that, when analyzed with a linear regression based on Kohlrausch’s Law, produced a value of 144.8 with an 95% confidence interval of ? 0.8 S-cm2/mol, satisfying initial goals.  Additionally, a questionable literature value for the equivalent conductance of a 0.01M KNO3 solution (132.8 S-cm2/mol) was investigated.  Statistical testing using the t-test of significant difference demonstrated that the experimental value of 135.6 ? 1.0 S-cm2/mol is significantly different from the literature value at this concentration.