Class 12 · Chemistry · 7 experiments
Pick an experiment to enter the virtual lab.
Silver mirror test — aldehydes reduce [Ag(NH₃)₂]⁺ to metallic Ag; ketones don't.
Fehling's solution: aliphatic aldehydes give brick-red Cu₂O ppt; ketones & ArCHO don't.
Schiff's reagent restores pink/magenta colour with aldehydes only.
2,4-DNP (Brady's reagent) gives yellow/orange ppt with aldehydes AND ketones.
Iodoform test: yellow ppt with CH₃CO- group & CH₃CH(OH)- group (NaOH + I₂).
NaHCO₃ brisk effervescence (CO₂) — only with carboxylic acids, not phenols.
Carboxylic acid + alcohol + H₂SO₄ → sweet fruity ester smell.