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JAMB UTME - Chemistry - 1992

Question 1 Report

The functional group present in an organic compound which gives bubbles on treatment with a saturated solution of NaHCO3 is?
Answer Details
The functional group that gives bubbles on treatment with a saturated solution of NaHCO3 is the carboxyl group. When an organic compound containing a carboxyl group reacts with NaHCO3, it undergoes a chemical reaction called an acid-base reaction or a neutralization reaction. During this reaction, the carboxylic acid reacts with NaHCO3 to form salt, carbon dioxide gas, and water. The carbon dioxide gas is responsible for the formation of bubbles. Therefore, option D, which is the carboxyl group, is the correct answer.
Read lesson note on Chemistry Of Carbon Compounds (Nigeria Only) (WAEC)
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