How many peaks would be observed for each of the circled protons in the compounds below?
A)I = 8; II = 4; III = 3; IV = 3
B)I = 7; II = 4; III = 3; IV = 4
C)I = 7; II = 3; III = 3; IV = 3
D)I = 7; II = 4; III = 2; IV = 4

Question

How many peaks would be observed for each of the circled protons in the compounds below? 
A)I = 8; II = 4; III = 3; IV = 3 
B)I = 7; II = 4; III = 3; IV = 4 
C)I = 7; II = 3; III = 3; IV = 3 
D)I = 7; II = 4; III = 2; IV = 4

Quizplus · Accepted Answer

I. There are 7 peaks as the proton is split by 3 equivalent protons (triplet), another 3 equivalent protons (triplet), and 1 proton (singlet).
II. There are 4 peaks as the proton is split by 3 equivalent protons (triplet) and 1 proton (doublet).
III. There are 3 peaks as the proton is split by 2 equivalent protons (doublet) and 1 proton (singlet).
IV. There are 4 peaks as the proton is split by 3 equivalent protons (triplet) and 1 proton (doublet).

How Many Peaks Would Be Observed for Each of the Circled