Name: Taylor JamesDate: June 16th, 2013

Partner: Erin AdamsSection: CHEM 1112-102 MW 12:30-4:55

Experiment 4

Solutions, Solubility, and Molecular Interactions

Objective:

The objective of this experiment is to work with solutions, solubility, and molecular interactions. The purpose is also to study the qualitive and quantitive solutions. In the experiment, the objective is to learn the difference between solubility, and miscibility.

Procedures:

  1. In part A, you are going to observe the combination of a total of 9 solutions.
  2. Record the observation in terms of solubility of each solution in your lab notebook.
  3. In Part B, you are going to observe the combination of a total of three solutions.
  4. Record the observation of these three solutions and record in lab notebook in terms of miscibility.
  5. In Part B-2, you are going to determine which solution in water dissolves faster, and why you think it dissolves faster.
  6. Record all observations in lab notebook.

Data Collection:

Data Table for Solubility Solutions

Naptaline (s) / Sodium Carbonate (s) / Barium Sulfate (s)
Isoprophyl Alcohol (l) / Insoluble / Partially Soluble / Insoluble
Cyclohexane (l) / Soluble / Partially Soluble / Partially Soluble
H20 (l) / Insoluble / Partially Soluble / Soluble

Data Table for Miscibility

H20 (l) / Isoprophyl Alcohol (l)
Isoprophyl Alcohol (l) / Miscible / ______
Cyclohexane (l) / Immiscible / Miscible

Data Table for Copper Pentahydrate

Finely Ground Copper Pentahydrate / Bulk piece of Copper Pentahydrate
H20 / Dissolves Faster / Dissolves Slower

Error Analysis:

Throughout our experiment we only came across one error. During our experiment we encountered a bug in one of our solutions, so we had to dispose of the chemicals properly and redo that particular solution.

Conclusion:

In our experiment, we determined the difference between miscibility and Solubility. Like dissolves like. In the first solution with naptaline and isoprophyl alcohol, we determined the solution to be insoluble because the solid was not able to dissolve into the alcohol. This is due to the fact that their atomic structure are not alike, causing them to be insoluble. Solutions that are miscible are liquids to liquids that dissolve together. Solutions that are immiscible don’t mix liquids to liquids. Solitions that are partially immiscible are partially mixed liquids to liquids. Solutions that are soluble are liquid to solid that are mixed. Solutions that are insoluble are solids to liquids and that do not mix. Solutions that are partially soluble are partially mixed within a liquid to solid. The reason why this is, is because like dissolves like. In part B of our experiment we determined that the Copper Pentahydrate that was more finely ground was the solution that dissolved the fastest, unlike the bulk part of the copper pentahydrate. This is because the particles are more finely ground just like the particles in h20 and since like dissolves like, this was our explanation.