[silver0309]

Indicate those of the following statements that are correct for the compound 13CH3OH
(More than one statement can be correct.)

a. The carbon-13 spectrum will be a 1:2:1 triplet.
b. The proton NMR spectrum will be a 1:1 doublet and a broad singlet.
c. The broad singlet in the proton spectrum is due to the exchange of protons among methanol molecules.
d. Because of the oxygen, the IR spectrum will have a strong band around 1750 cm-1.
e. This compound will absorb in the visible region, and will therefore be coloured.
f. The mass spectrum should have a peak at mass 15.

The only one that looks right to me is f, but would having carbon-13 change the mass spectrum? Are any of the other choices correct?