Density of an Unknown Liquid
Objective
To determine the identity of an unknown liquid by measuring its density.
Reference
"Dartmouth College, Chemistry 5 Lab Manual", pp. 25 - 37.
Prelab Procedure Outline
1. Obtain sample of unknown liquid. Note physical
KEEPING A LABORATORY NOTEBOOK
The laboratory notebook is the most important component of good laboratory performance. It must
be an accurate and unambiguous record of your laboratory work. The grade in this course will be a
direct reflection of the conten
Lady Dominique Iglesia
10 February 2016
Professor Bonnie Brown
Graphics Exercise
1/T (K)
ln Keq
H
slope = -H/R
0.00209
5.35
H=-0.86(8.3145)
0.00188
4.29
=-7.15047
0.0017
3.43
0.00156
2.77
Graph of the Enthalpy of Reaction ln K(eq) vs 1/T
6
5.5
5
f(x) = -
Part B: Heat Capacity of the Calorimeter (SHOW ALL YOUR
CALCULATIONS)
Make a graph of temperature vs. time for each of your two runs.
Determine the minimum Ti and maximum Tf from the graph and
calculate T.
Part C: Heat of Dissolution (reaction) of Mg in H