How many signals (different protons) would you expect in the^1H NMR spectrum of

Question

How many signals (different protons) would you expect in the^1H NMR spectrum of the following structure? a) 2 b) 3 c) 4 d) 5 e) 6 Which of the indicated protons in the following compound would appear most upfield in the^1H NMR spectrum? Which of the following compounds displays two triplets and a singlet in its^1H NMR spectrum? a) CH_3CH(OCH_3)_2 b) CH_3OCH_2CH_2OCH_3 c) CH_3OCH_2CH(OH)CH_3 d) CH_3OCH_2CH_2CH_2CH_2OCH_3 e) none of the above Which of the following is not a prominent peak in the mass spectrum of 2-methyl-2-pentane a) M-15 b) M-16 c) M-18 d) M-29 e) None of the above

Explanation / Answer

a) The number of differenhe environment carbons are 3. Hence it shows three peaks in the resultant NMR spectrum.

Thus the answer is b)

b) II- proton will have greater chemical shift position because of having greater deshielding effect of Oxygen.

c) Option d) is having three different environment carbons to show twi triplets and one singlet.

d) The name of the compound is not clear.

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