One can calculate the relative amounts of cis and trans 4-tert-butylcyclohexanols in your synthetic mixture by looking at the signals in the NMR due to the proton attached to the carbon bearing the OH group. They have different chemical shifts because;
Group of answer choices
they are in different magnetic environments.
because one is primary and the other is secondary..
because on is cis to the tert-butyl group and the other is trans.
none of the above.
2) Deutero-chloroform is the most commonly used NMR solvent because;
Group of answer choices
it dissolves a wide variety of compounds.
it has no protons to give rise to NMR signals.
it is fairly volatile and there fore makes it easy to recover your sample.
it is not toxic.
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Ans:1 The correct option is "B" that one is cis to ter-butyl group and other is trans with this group because t- butyl group makes it more shielded in the trans form than in the cis form that is why chemical shift is lesser in cis form than in trans form for that particular proton.
Ans:2 The correct option are "A,B,C" that is it having no proton to give NMR signal because this is deuterated solvent. If we will not use deuterated solvent than the protons of the solvent will interefere with the signal of the compound. Easy to recover sample as boiling point is around 60 degree Celsius and it dissolves many compounds.
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