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Question
1.4 gm of oil required 1.8 ml of 0.01N KOH for neutralization. Calculate the acid value and mention whether the oil is suitable to be used or not.
Solution
Given Data:- Weight of the oil = 1.4 gm.
Normality of KOH = 0.01.
Volume of KOH = 1.8 ml.
To find:- Acid value of the oil.
Formula:- Acid value = `"Vol.of KOH x Normality of KOH x 56"/"Weight of oil"`.
Solution :- Acid value = `{1.8 xx 0.01 xx 56)/1.4`.
= 0.72mg
∴ Acid Value = 0. 72 mg/gm of oil.
As the acid value is much higher than 0. 1 , the oil is not suitable to be used.
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