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Chemical Dynamics (CM 104) Gravimetric Analysis Of A Metal Carbonate

Sandra Watson
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Clarkson University

Chemical Dynamics (CM 104)

Ap lab manual 2 – gravimetric analysis of a metal carbonate

Gravimetric Analysis of a Metal
A large variety of analytical techniques and procedures are available to chemists to help
determine the identity of a given substance. Some common analytical techniques include
chromatography, spectroscopy, qualitative analysis, and gravimetric analysis. This
experiment will familiarize you with the gravimetric procedure.
In this experiment, an unknown group 1 metal carbonate, abbreviated as M2CO3, will be
analyzed to determine the identity of the group 1 metal, M. A known amount of the
soluble unknown carbonate will be dissolved in water to dissociate the compound into its
component ions:

The calcium carbonate precipitate will be filtered, dried, and weighed. The moles of
calcium carbonate are stoichiometrically equal to the moles of the group 1 metal
carbonate that was added to the original solution. Dividing the mass of the unknown
carbonate by the moles of calcium carbonate will yield the formula mass of the unknown
compound, which will allow you to determine the identity of your unknown group 1



Chemical Dynamics (CM 104) Gravimetric Analysis Of A Metal Carbonate

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