Neutralization Titrations (lab 4)

Neutralization Titrations (lab 4) - Neutralization...

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Unformatted text preview: Neutralization Titrations Joel I. Eldridge Abstract Neutralization is a chemical reaction whereby an acid and a base react to form water and a salt. The focal point of the experiment is determining the point of neutralization with standard solutions of strong acids or bases. The skills used to carry out the experiment are standardization and titration. Standardization is the process of performing a titration in order to determine the exact concentration of the solution that will be used to determine the concentration of an unknown. Titration, however, is the process by which the concentration of an unknown substance is determined by adding measured amounts of a standard solution that reacts with the unknown. The unknowns provided for completion of the experiment include the following: vinegar, ammonia, and sodium carbonate. Objective determine the molarity of an unknown concentrati on of hydrochloric acid and sodium hydroxide determine the acid content of Vinegar determine the amount of sodium carbonate in an unknown determine concentration of ammonia Introduction Neutralization is a chemical reaction whereby an acid and a base react to form water and a salt. The focal point of the experiment is determining the point of neutralization with standard solutions of strong acids or bases. It is also important to understand that single solutions are adequate for titration of an analyte; however if back-titration must be performed it is also more convenient to use standard solutions of strong acids and bases. This process aids in locating the endpoint much more precisely. The act of determining the concentration of a solution is performed by titrating it against the primary standard, which will aid in the determination of the acid/base ratio. The method used to carry out the experiment is titration. Titration is the process by which the concentration of an unknown substance is determined by adding measured amounts of a standard solution that reacts with the unknown. Principle Chemical titration methods are primarily used for analyzing acids and bases so that the concentration of the unknown can be determined. A pH indicator was added to the unknown solution. The pH indicator allows one to see the point of neutralization by a distinct color change that takes place. The most common pH indicators include bromocresol green and phenolphthalein....
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This note was uploaded on 04/18/2011 for the course CHEMISTRY 210 taught by Professor Dr.han during the Spring '11 term at Fayetteville State University.

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Neutralization Titrations (lab 4) - Neutralization...

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