How to Identify an Organic Compound Using Qualitative Organic Analysis ─ Part 3

Qualitative organic analysis focuses on the development, validation and application of methods to identify unknown compounds, sometimes in a mixture or a solution.


With the advent of sophisticated analytical instruments, the identification (and quantification and purification) of organics has become easier than ever; however, not all labs have a direct access to these instruments, which, more often than not, may cost you a fortune. Glassware-based wet lab reactions may still help one identify an organic compound.

Question:

Identify (A) on the following image:



Click/tap to enlarge the image

Solution infographic:



Click/tap to enlarge the image

MF = Molecular formula, IHD = Index of hydrogen deficiency or degree of unsaturation (DU/DoU) or double bond equivalent (DBE)

Quantitative analysis of active hydrogens in a chemical compound by adding Methylmagnesium iodide in Pentyl ether to the solution of analyte and quantitatively determining the volume of Methane gas formed uses Zerewitinow reaction.

These questions are often given in the exams with descriptions. You should make a summary like the question above for a problem-solving approach.

NOTE: Post updated since published

Quixotic qualitative analysis❓ Let Chemaficionado know in the comments below or at mychemistryhomework@gmail.com❗

References:

(1)    Wikipedia Contributors. Analytical chemistry. Wikipedia. https://en.wikipedia.org/wiki/Analytical_chemistry.

(‌2)    Chouhan, M. S. Advanced Problems in Organic Chemistry for JEE, 11th Ed.

(3)    Brown, C.; Ford, M. Higher Level Chemistry, 2nd ed.; Pearson Education: Harlow, Essex, 2014.

(4)    Ncert. Chemistry : Textbook for Class XI - Part.II; National Council Of Educational Research And Training: New Delhi.

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