Experiment 2
Gravimetric Determination of Water of Hydration


CALCULATIONS/SET-UPS

Mass of sample
mass of crucible, lid and sample - mass of crucible and lid
Mass of water lost
mass of crucible, lid and sample before drying - mass of crucible, lid and sample after final drying
Percent of water in sample
Experimental percent H2O =
mass of water lost
x 100
mass of sample
Average percent water
in sample
percent water in sample 1 + percent water in sample 2
2
Range of percent water
in sample
| percent water in sample 1 - percent water in sample 2 |


NOTE: Set-ups always contain:

  1. A formula or equation, which may be in symbols or words
  2. Experimental data substituted into the equation
  3. A completed solution to the calculation

 

  

1. Safety
2.
 Objectives/Overview
3.
 Procedures
4. Observations
5.
 Equipment
6.

View Techniques:
A. Lighting the Bunsen Burner
B. Heat, Cool, and Weigh Cruicibles
C. Heat, Cool, and Weigh Crucibles with Sample

D. Repeat Heating, Cooling, Weighing Crucibles with Sample
7. Waste Disposal/Clean-up
8.

Calculations/Setups
9. Conclusions
10. Grading Scale
11. Review Prelab Questions
12.
 Review Postlab Questions
 
   
 
 
 

 

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