chem lab 4 - Katie Marrero Noah Orfield Matter of Sleuth...

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

View Full Document Right Arrow Icon
Katie Marrero Desk 2 Noah Orfield Thursday 110 Matter of Sleuth Discussion and Conclusion In this lab, the unknown salt 5 was determined to be KCl by determining the molecular weight. This was done through ion-exchange chromatography of the unknown salt with resin. This was done in order to create a neutral solution that contained the unknown salt. Then using the solution of from the ion-exchange chromatography, a titration was done with NaOH to determine the moles of unknown in solution. This was done by finding the milliliters of NaOH needed to determine the end point. From this, the moles of the unknown could be found. The grams of unknown were then divided by the moles of unknown to give the molecular weight. The molecular weight of unknown 5 was determined to be 77.5 g/mol. From this, it could be deduced that the unknown was KCl, which has a molecular of 74.5 g/mol. In the next part of the lab, four substances were identified to either be a homogeneous mixture, pure element, covalent compound or molecular compound. By visual inspection, A was
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.

This note was uploaded on 11/10/2010 for the course CHEM 106A taught by Professor Phillips during the Fall '08 term at Vanderbilt.

Page1 / 3

chem lab 4 - Katie Marrero Noah Orfield Matter of Sleuth...

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