i have to identify 5 samples (1,2,3 were solids, 4,5 were liquids) by classifying them as
1) Aliphatic or aromatic and
2) Carboxylic acid, amine (primary, secondary, tertiary) or ammonium carboxylate
We did a burn test on the solids, tested solubility in water (and test solution for pH), tested solubilty in HCl, and treatment with 10% NaOH, in that order
Burn Test: 1 - Clean flame, no smoke 2 - Yellow sparks, smoky-ish flame 3 - smoky flame
Solubilty in Water: 1 - Dissolved 2 - Dissolved 3 - Partially 4 - Partially in hot water 5 - Partially in hot water
pH: 1 - Acid 2 - Neutral (i think) 3 - Acid 4 - Basic 5 - Basic
Solubilty in HCl: 1 to 4 - Undissolved 5 - Dissolved
Addition of 10% NaOH: 1 to 3 - No smell but dissolved 4 and 5 both ahd a pungent smell
The Attempt at a Solution
1 is an aliphatic compound. 2,3 are aromatic.
Solution 1 is a simple carboxylic acid. Solution 2,3 are aromatic carboxylic acids.
Solution 4,5 are either amines or ammonium carboxylates. i can't figure out which.
The results are subject to college lab conditions and may be wrong (but hopefully not)
So can anyone clarify the functional groups?