Acid Base (pH) indicators are those substances which change in color when they come in contact with an acidic or basic environment. Different pH indicators are used depending on the pH at the equivalence point during the titration. In this lab, two titrations will be performed - one involving a weak acid titrated with a strong base, the other involving a weak base tritrated by a strong acid. In each titration, an appropriate indicator will be selected to determine the correct equivalence point. The titration curves are also graphed and analyzed. Includes materials for 15 setups.
Chemical Contents:
Acetic Acid
Ammonia Solution
Hydrochloric Acid
Sodium Hydroxide
Phenolphthalein Solution
Bromothymol Blue Solution
Methyl Red Solution
Additional Materials Required:
150 mL Beaker
Buret
25 mL Graduated Cylinder
pH meter
Ring Stand and Clamp
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