The chemical shift of the CH 3 protons in acetaldehyde (ethanal) is = 2.20 and that
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The chemical shift of the CH3 protons in acetaldehyde (ethanal) is δ = 2.20 and that of the CHO proton is 9.80. What is the difference in local magnetic field between the two regions of the molecule when the applied field is
(a) 1.5 T,
(b) 15 T?
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