During a chemical identification test, a student adds iodine and sodium hydroxide to an unknown alcohol, resulting in yellow crystals. Which alcohol is it?
Q1. During a chemical identification test, a student adds iodine and sodium hydroxide to an unknown alcohol, resulting in yellow crystals. Which alcohol is it?
Answer: Ethanol
Explanation: Ethanol reacts with I2 and NaOH to form yellow iodoform crystals. Methanol fails this test because it lacks the CH3-CH(OH)- group.