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Miscellaneous

Titration of an Acid

The object of this experiment is to determine the molar concentration of a sample of phosphoric acid (H3PO4) of unknown concentration. We will use quantitative analysis for this determination. Often, this determination is accomplished through a titration of the sample with a solution of another substance whose concentration is known. These substances must react with each other, of course. Some physical or chemical response must be coupled to the titration to signal the exact completion of the reaction. An indicator can sometimes be used. The indicator chosen will have one color before the reaction is complete and another color when completion occurs. After the indicator is added to the sample solution, the solution of known concentration is delivered carefully from a buret until the indicator changes color.

We will determine the concentration of phosphoric acid by titrating a sample of phosphoric acid with a solution of sodium hydroxide (NaOH). These......


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Approximate Word Count: 862
Approximate Pages: 4 (250 words per double-spaced page)

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