Measure the conductivity. Adding one drop of 1.0 M NaCl makes the concentration of the solution 0.0005 M or 0.5 mM as shown by the calculation below. It is also assumed that the addition of each drop does not significantly increase the total volume of the solution. Record your measurements in the table on Worksheet 2 . Data Management and Analysis Graph the data.
Concentration is the independent variable and the conductivity is the dependent variable.
Use this standard curve to answer Questions 6-8 on Worksheet 2 . Interpretation of Data Reflect on your laboratory techniques and skills as you complete Worksheet 2 . Use the information from your standard curve to address item 9. Reporting Results Compare your graph with other teams. Using a transparency and overhead projector or overlay mylar, plot the standard curves from all teams.