Components of the Acid-Base Titration
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A common acid-base reaction between solutions of sodium hydroxide and hydrochloric acid will be used to demonstrate the technique of chemical titration.
The flask contains a solution of hydrochloric acid. The buret contains the titrant, which in this case is the sodium hydroxide solution. The buret will be used to measure the amount of sodium hydroxide that completely reacts with the hydrochloric acid in the flask.
The indicator phenolphthalein will be added to the flask to determine the endpoint of the titration. Phenolphthalein is colorless in acidic solutions and pink in basic solutions. We will stop adding sodium hydroxide at the first permanent faint pink color in the flask.