organic fn grps

Question 1

carboxylic acid

Answer 1

1. sodium bicarbonate test. brisk effervescence.
2. esterification. ethyl alcohol, h2so4, heat, pour into water. fruity

Question 2

alcohol

Answer 2

1. metallic na test: shake soln w cacl2, add na piece. evoln of h2.
2. cerium ammonium nitrate. pink red ppt.

Question 3

aldehyde

Answer 3

1. tollens (ammoniacal silver nitrate)
2. fehlings. brown ppt

Question 4

phenol

Answer 4

1. neutral fecl3 test. rbgv color
2. phthalein test. phthalic anhydride, conc h2so4, pour into naoh. pink.