Protons bonded to heteroatoms

In a ¹HNMR experiment, the chemical shift of O-H protons does not depend on the concentration of the sample

• False

• True

In a ¹HNMR experiment, the chemical shift of N-H protons depends on the temperature of the experiment

• False

• True

In a ¹HNMR experiment, the chemical shift of S-H protons depends on the deuterated solvent used in the experiment

• False

• True

The following ¹HNMR spectrum (300 MHz, CDCl₃) corresponds to...

• Aniline

• Catechol (1,2-dihydroxibenzene)

• N-Methylaniline

• Phenol

In general, intermolecular hydrogen bond formation shifts downfield OH protons in a ¹HNMR experiment

• True

• False

In general, in a ¹HNMR experiment, intramolecular hydrogen bond formation makes the OH chemical shift more sensitive to concentration

• True

• False

Which deuterated solvent allows the coupling between the OH and the CH₂ in ethanol to give a triplet at 4.4 ppm (J = 7 Hz) when running a ¹HNMR experiment?

• CDCl₃

• CD₃OD

• D₂O

• DMSO-d⁶

The following ¹HNMR spectrum (300 MHz, CDCl₃) corresponds to...

• Acetic acid

• Methyl formate

• Methanol

• Thiomethanol

The following ¹HNMR spectrum (300 MHz, CDCl₃) corresponds to...

• 2,2-Dimethylpropanamine

• 1,2-Dimethylpropanamine

• Isopropylamine

• 1,1-Dimethylethanamine

The following ¹HNMR spectrum (300 MHz, CDCl₃) corresponds to...

• 2-Chloroacetamide

• N-Chloroacetamide

• Acetamide

• Ethanamine