Which of the following reagents will confirm the presence of unsaturation in a compound?

Assessment: JAMB UTME - Chemistry - 1994 Subject: Chemistry

Question 1 Report

Which of the following reagents will confirm the presence of unsaturation in a compound?
Answer Details
Bromine water can confirm the presence of unsaturation in a compound. Unsaturated compounds contain multiple bonds between carbon atoms, and these double or triple bonds can readily react with bromine water (an aqueous solution of bromine) by breaking the double or triple bond and forming a colorless dibromo compound. As a result, if the compound has unsaturation, bromine water will lose its characteristic orange color upon reaction with the compound, indicating the presence of unsaturation. The other reagents listed are used for different types of chemical tests, such as reducing sugars (Fehling's and Benedict's solutions) or identifying aldehydes or ketones (Tollen's reagent).
Read lesson note on Chemistry Of Carbon Compounds (Nigeria Only) (WAEC)
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