Organic Chem - Identifying Functional Groups

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SUMMARY

The discussion focuses on identifying functional groups in organic compounds through various tests. The burn test indicated that sample 1 is an aliphatic compound, while samples 2 and 3 are classified as aromatic compounds. Samples 1, 2, and 3 are identified as carboxylic acids, while samples 4 and 5 are suspected to be amines or ammonium carboxylates. The results highlight the importance of solubility tests in water, HCl, and NaOH for determining the nature of organic compounds.

PREREQUISITES
  • Understanding of organic chemistry functional groups
  • Familiarity with solubility tests in organic compounds
  • Knowledge of burn test implications for compound classification
  • Basic skills in laboratory techniques for organic analysis
NEXT STEPS
  • Research the characteristics of aliphatic vs. aromatic compounds
  • Learn about the solubility of carboxylic acids in various solvents
  • Study the identification methods for amines and ammonium carboxylates
  • Explore the implications of burn test results in organic chemistry
USEFUL FOR

Students in organic chemistry, laboratory technicians, and educators seeking to enhance their understanding of functional group identification through practical testing methods.

whiteman
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Homework Statement


Hi all,
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


Homework Equations


Results:
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?
Thanks
 
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A clean flame means what type of compound?
Solubility in water means 'what' for and organic compound?
Solubility in HCl is seen for what type of organic compound?
How about solubility in NaOH?
If you smell something when you treat it with strong base, what could that be? Other than 'pungent', what did it smell like? Flowers? Skunk?
 

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