Calculation of Magnetic Moment
Gouy pic 1 Gouy pic 2
1 2

In the Laboratory Experiment involving the Gouy method, you are required to make 7 weighings from which the magnetic moment can be determined.

The following form can be used to do the necessary calculations:
Enter the weights in gram and the temperatures in Kelvin.

1) weight of the empty Gouy tube with the magnet switched OFF
W1
6) weight of the tube, filled to the same height with your sample, magnet OFF
W6
2) weight, with the magnet switched ON
W2
7) weight, with the magnet switched ON.
W7
3) weight of the Gouy tube, filled to a marked height with water, magnet OFF
W3
In addition to these weights, you need:
8) the RMM (Molar Mass) of your sample
RMM
Select the calibrant used in your measurements.
a) Hg[Co(CN)4
b) [Ni(en)3]S2O3
9) its diamagnetic correction value
DC
4) weight of the tube, filled to the same height with calibrant, magnet OFF
W4
10) the temperature of the calibrant
T1
5) weight, with the magnet switched ON
W5
11) the temperature of your sample.
T2

If you would like to see some test data, recorded for Cr(III)(acac)3 at room temperature, then check the following:
No
Yes

Alternatively, an Excel spreadsheet template (15872 bytes) is available to calculate the Magnetic Moment.

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Copyright © 2006 by Robert John Lancashire, all rights reserved.

Created and maintained by Prof. Robert J. Lancashire
The Department of Chemistry, University of the West Indies,
Mona Campus, Kingston 7, Jamaica.

Created October 1995. Links checked and/or last modified 18th September 2006.
URL http://wwwchem.uwimona.edu.jm/lab_manuals/gouy.html