Question: (a) Show that replacing each of the CH2 protons by some group Q in the (S) enantio-mer of 2-butanol leads to a pair of diastereomers,

(a) Show that replacing each of the CH2 protons by some group Q in the (S) enantio-mer of 2-butanol leads to a pair of diastereomers, as it does for the (R) enantiomer.
(b) How many chemically nonequivalent sets of protons are there in 2-butanol?
(c) How many 1H NMR signals would you expect to find in the spectrum of 2-butanol?

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