Spin-spin coupling

Protons with the same chemical environment are chemically equivalent and they appear at the same chemical shift in a ¹HNMR experiment

• True

• False

Dimethylmalonate has three groups of chemically equivalent protons

• True

• False

In a ¹³CNMR experiment, when a ¹³C couples with one atom of deuterium affords a...

• Triplet

• Doublet

• Singlet

• Doublet of doublets

In a ¹HNMR experiment, when a ¹H couples with one atom of ¹⁹F affords a...

• Triplet

• Doublet

• Singlet

• Doublet of doublets

In a ¹HNMR experiment, when a ¹³C couples with one atom of ³¹P affords a...

• Triplet

• Doublet

• Singlet

• Non of the answers

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

• 1,2,2-Trichloroethane

• 1,1,1-Trichloroethane

• 1,2-Dichloroethane

• 1,1-Dichloroethane

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

• DMF

• N-Methylacetamide

• Propanamide

• Aminoacetone

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

• p-Ethylaniline

• o-Ethylaniline

• m-Ethylaniline

• N,4-dimethylaniline

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

• 2-Methylbut-3-en-2-ol

• 3-Methylbut-3-en-2-ol

• (E)-2-Methylbut-2-en-1-ol

• (Z)-2-Methylbut-2-en-1-ol

Which of the following molecules shows a ¹H-¹H coupling constant (J) of 17 Hz in its ¹HNMR spectrum (CDCl₃, 300 MHz)?

• (E)-pent-2-ene

• (Z)-pent-2-ene

• (E)-hex-3-ene

• (Z)-hex-3-ene