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Find the acid-value of vegetable oil whose 5ml required 2ml of N/10 KOH during titration (Density of oil = 0.92).
1 Answer
written 3.9 years ago by |
Given:
Volume of oil=5ml,
Volume of KOH=2ml,
Density of oil=0.92,
Normality of KOH=0.01N.
To find: Acid value
To find the weight of oil,
density=massvolume or mass=density×volume
weight of the oil=0.92×5
=4.60
Acid value=volumeofKOH×normalityofKOH×56weightofoil
Hence acid value=2×0.01×564.60
acid value=0.243 mg …