A chemist tests a sample of suspected propanone by adding iodine in the presence of sodium hydroxide. What visual observation confirms the methyl ketone?
Q1. A chemist tests a sample of suspected propanone by adding iodine in the presence of sodium hydroxide. What visual observation confirms the methyl ketone?
Answer: Yellow crystals
Explanation: Acetone reacts with iodine and NaOH to form yellow iodoform crystals. Ethanol also gives this test, but it is an alcohol, not a ketone.