This video lecture from Carboxylic Acids (F.Sc. second year Chemistry) covers the reactions of carboxylic acids in which the hydroxyl group is involved. When alcohols react with carboxylic acids, a substitution reaction takes place where by hydroxyl- group and hydrogen are eliminated from alcohol and acid respectively to produce water. The other product is simply an ester hence the name of the process. Esterification is a reversible reaction. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.