Lecture_2

Lecture_2 - Colligative Properties Melting Point and...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: Colligative Properties Melting Point and Experiment 1 Infrared Spectroscopy Properties of solutions that depend upon the number of particles, not the mass. ◦ Freezing (Melting) point depression Freezing Point total = Freezing Point solvent – Δ T f ◦ Boiling point elevation Boiling Point total = Boiling Point solvent + Δ T b ◦ Is Density a Colligative Property? A. Yes B. No Density (mass/volume) reported in g/mL ◦ Weigh 1.0 mL of known liquid and compare to the literature value (CRC..see “links” webpage) ◦ Report % error [(Literature Value-Experimental)/Literature]x100 This value enables chemists to quantitatively compare methods and devices Melting Point Depression Experiment ◦ Taking melting points of different ratios of two solids. Mel-Temp® Temp of Mel-Temp should increase slowly ◦ ~ 5 °C per minute ◦ Pure compounds melt over sharp range What happens to the melting point if you mix two solids with the exact same melting point together?...
View Full Document

This note was uploaded on 04/09/2011 for the course CHEM 6a taught by Professor Pettus during the Winter '07 term at UCSB.

Page1 / 39

Lecture_2 - Colligative Properties Melting Point and...

This preview shows document pages 1 - 8. Sign up to view the full document.

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