Lab 3 - Chem 3AL Lab 3 Sweta Ramachandran 19500958...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 3AL Sweta Ramachandran Lab 3 19500958 03/18/2007 Whittling Down the Possibilities: Identifying an Unknown Using Dipole Moment, Solubility, Density, and Boiling Point Data Unknown 1D: For the first unknown, we first determined that the molecule had no dipole moment because we didn’t observe any diversion in the stream of liquid. When we mixed the unknown and water, we found that the compound was not soluble in water because the mixture formed two distinct layers. Next, we took the top layer and added it to sodium chloride, and the salt did not dissolve, leading us to conclude that the top layer was the unknown, and thus less dense than water. Last, we experimentally found the boiling point to be 105 ° C. From all these observations, we concluded that the unknown was heptane. The results we obtained were very similar to those I predicted. The only slight discrepancy was the boiling point, which should have been around 98 ° C. However, the accuracy of the experimental method is approximately ± 4 ° C, so our results were fairly close. Unknown 2D: For the second unknown, we first determined that the compound had a dipole moment because we observed a significant diversion in the stream of liquid. When we mixed the unknown and water, we found that the compound was soluble in water because the mixture did not form layers. Thus, we couldn’t test for density because they mixed completely. Finally, we experimentally found the boiling point to be 65 ° C. From all these observations, we concluded
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Lab 3 - Chem 3AL Lab 3 Sweta Ramachandran 19500958...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online