Based on the conductivity lab results answer the following questions please.

1.Which graph had the steepest slope? The smallest?

2.Given the equation for the dissociation of Li, CO, below, write the equation for the dissociation of the ionic compounds in this lab. (Don't worry about subscripts & superscripts) Li, CO, > 2Li+Co,2 11 12 Answer: a) KNO, -> b) K2S02-> c)CaCi2->

3. Since all solutions had the same concentration, what accounts for the difference in the slope of the three plots? Explain well. Answer:

4. If you repeated this experiment with MgS04, would you expect the slope of the line to be close to that of potassium nitrate or potassium sulfate? Explain well. Answer:

5. In another conductiviy lab of solution, NaOH conducts electricity but sugar does not. Explain well. (Hint: what's different about these two molecules chemically?)

Answer:

Conductivity of KNO3 14 12 y = 123.56x + 0.0527 10 8 Conductivity (ms) 6 2 0 0 0.02 0.04 0.06 0.08 0.1 0.12 Concentration (M) ......... Linear (Concentration (M)) Conductivity of CaCl2 25 20 y = 191.52x + 0.1777. 15 Conductivity (ms) 10 0 0.02 0.04 0.06 0.08 0.1 0.12 Concentration (M) Linear (Concentration (M)) Conductivity of K2504 25 20 y = 198.07x + 0.2304. 15 Conductivity (ms) 10 5 0 0 0.02 0.04 0.06 0.08 0.1 0.12 Concentration (M) Linear (Concentration (M)) lonic Compound: Potassium nitrate Concentration (M) Conductivity (ms) 0.0001 0.0157 0.001 0.1445 0.01 1.378 0.1 12.4 lonic Compound: Potassium sulfate Concentration (M) Conductivity (ms) 0.0001 0.0317 0.001 0.2955 0.01 2.6 0.1 20 lonic Compound: Calcium chloride Concentration (M) Conductivity (ms) 0.0001 0.0281 0.001 0.2603 2.4 0.01 0.1 19.3 Slope of lonic Compound Trendlines lonic Compound Slope Potassium nitrate 123.56 Potassium sulfate 198.07 Calcium chloride 191.52