Standardization:• Accurately weigh about 700 mg of Potassium Biphthalate, previously crushed lightly and dried at 120° for 2 hours, and dissolve it in 50 ml of glacial acetic acid in a 250-ml)conical flask.
• Add 2 drops of Crystal Violet, and titrate with the perchloric acid solution until the violet color changes to blue-green.
• Deduct the volume of the perchloric acid consumed by 50 ml of the glacial acetic acid.
• Each 20.42 mg of Potassium Biphthalate is equivalent to 1 ml of 0.1N perchloric acid.
• Calculate the molarity by following formula:
KHC8H4O4 in gm
0.20423 x HClO4 in ml
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