Describe what information each technique provides to help identify the structure

Question

Describe what information each technique provides to help identify the structure of either pure material (spearmint and carraway seeds) (carvones). Describe the strengths and weakness of each technique (smell, mass spectrometry, IR spectroscopy, NMR spectroscopy, and polarimetry). Describe what information each technique provides to help identify the structure of either pure material (spearmint and carraway seeds) (carvones). Describe the strengths and weakness of each technique (smell, mass spectrometry, IR spectroscopy, NMR spectroscopy, and polarimetry).

Explanation / Answer

1. Smell: Helps in easy identification physically based on the uniqueness without using any advanced analytical technique.

Strengths:

Weakness:

2. Mass Spectrometry:

Strengths:

Weaknesses:

3. IR Spectroscopy: Used for identification of functional groups present in the sample.

Strengths:

Weakness:

4. NMR:

Strengths:

Weakness:

5. Polarimetry: Used for differentiation of compounds on the basis of optical activity. In this case the optical rotation of spearmint is -45 to -60 deg and optical rotation of caraway is around +70 deg.

Strengths:

Weakness:

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