1) Which carbon isotope is used for carbon nmr a) 12 b) 13 c) 14 2) How many Carbon-13 peaks would this compound give? a) 4 b) 2 c) 3 3) What is used to standardise NMR spectra a) TML b) TMS c) TNS d) TNL 4) How many Carbon-13 peaks would this molecule have? a) 6 b) 5 c) 4 5) What is changed in when running an NMR? a) the radio frequency b) the magnetic field 6) If a carbon atom is attached to an oxygen atom what happenes to the signal? a) it is shifted down field b) it remains in the same place c) it is shifted up field 7) Which hydrogen isopopte is used for the solvent? a) H¹ b) H² c) H³ 8) How many peaks would the propanone give? a) 3 b) 2 9) How many peaks would propanal give a) 2 b) 3 10) Which compound would give the following spectrum? a) CH₃CH₂OH b) CH₃CH₃ c) CH₂CH₂

C13 NMR quiz

by Anonymous
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