MDCAT Chemistry MCQ #407

A student adds Fehling's solution to a sample of Ethanal and heats the mixture. What observation confirms the presence of the aldehyde group?

MDCAT Chemistry MCQ #407

  1. Question 1

    Q1. A student adds Fehling's solution to a sample of Ethanal and heats the mixture. What observation confirms the presence of the aldehyde group?

    • A) Deep blue solution
    • B) Silver mirror
    • C) Brick red precipitate
    • D) Yellow crystals

    Answer: Brick red precipitate

    Explanation: Fehling's solution reacts with aliphatic aldehydes to form a brick-red Cu2O precipitate. Option A is the color of the initial reagent.