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1. CH2O2 2.Carboxylic acids reacts with sodium hydrogen carbonate to produce carbon dioxide gas which can be seen in the form of a brisk effervescence. Carboxylic acid reacts with alcohol in presence of conc. sulphuric acid to form ester that isidentified by the presence of a fruity smell.
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2.Carboxylic acids reacts with sodium hydrogen carbonate to produce carbon dioxide gas which can be seen in the form of a brisk effervescence. Carboxylic acid reacts with alcohol in presence of conc. sulphuric acid to form ester that isidentified by the presence of a fruity smell.