CSIR, GATE, JAM, IISc, and all other Chemistry Higher studies Exams has been changed their syllabus. If we analyze them quite precisely and it’s seems that many advanced are of research has been included. The previous year’s questions from those type exams are clearly indicated that, students must understand the fundamentals, and they must have reasoning ability to answer the question. In this view we wish to collect most important exam based reasoning questions and we discussed answer for them. It’s not only useful for competitive exams also for your interviews.
Today's Question is related to Organic Chemistry Reasoning Questions-1
Why o-nitrophenol is much more volitile than p-nitrophenol?
Dear readers, we have seen before, Hydrogen-bonding leads to an increase in intermolecular ‘aggregation’ forces and is manifested particularly in the boiling point and solubility of the organic compound.
But, Intramolecular hydrogen-bonds can also be formed, and and are of particular significance when the resulting ring is five- or six- membered. This is called chelation.
Since chelation does not rise to intermolecular aggregation forces, chelated compounds have normal boiling point. para-nitrophenol forms intermolecular hydrogen-bonds.
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