DePaul chem 111 lab 6

DePaul chem 111 lab 6 - Purpose Carbon dioxide is formed in...

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Purpose Carbon dioxide is formed in the reaction between an unknown Group I or II carbonate and an acid. The main point of this experiment was to determine the unknown carbonate. The main chemical principle used to identify the unknown required the use of Dalton’s Law of Partial Pressures to correct he presence of water vapor. When one mole of carbon dioxide is released, one mole of the carbonate reacts with an acid. This one-to-one ratio helps to determine the mass percentage of a carbonate being determined. Dalton’s Law indicates that the pressure of carbon dioxide would be determined if the total pressure in the cylinder and the water vapor pressure are found. This will eventually help determine the moles of carbon dioxide, then eventually the mass of carbon dioxide. The calculations from this experiment and the pre-lab assignment helped to determine that the carbonate was actually from the first group and could easily be Potassium carbonate because the average mass percentage was 0.328. Procedure General and Analytical Chemistry 111. DePaul University Department of Chemistry, Autumn 2007. Chicago, IL. Pg 52-60. Data and Results
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This note was uploaded on 04/09/2008 for the course CHEM 111 taught by Professor Parra during the Spring '08 term at DePaul.

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DePaul chem 111 lab 6 - Purpose Carbon dioxide is formed in...

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