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Unformatted text preview: 2. an antacid, such as Alka-Seltzer (sodium bicarbonate), because the base of the antacid can be determined by titrating against a standard that is acidic, and 3. a household cleaner, such as a window cleaning product, because the concentration of ammonia can be determined by titrating against a standard that it acidic. 3.) It is necessary to add an indicator, because it allows us to visually observe when a particular solution has reached the endpoint of the titration. The indicator lets us know when we have added a correct amount of base or acid, depending on the experiment, in order for the solution to neutralize. An indicator works as either a weak acid or base having a certain color and gives an indication of when the solution has neutralized and when the titration should end. When a particular solution containing the weak indicator is titrated, the solution will be titrated until the indicator has formed enough so that the solution changes to a different color....
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This note was uploaded on 04/12/2008 for the course CHE 1121 taught by Professor Guo during the Fall '07 term at St. Johns Duplicate.
- Fall '07