Question

iii)
What will be the coupling constant valve for para couple protons.
a) 2 HZ
b) 4 Hz
c) 8 Hz
d) 20 Hz.​

Answer 1

Answer:

8, hz coupling contasr tothe protons

Answer 2

Answer:

hiiiii mate

For vinylic hydrogens in a trans configuration, we see coupling constants in the range of 3J = 11-18 Hz, while cis hydrogens couple in the 3J = 6-15 Hz range. The 2-bond coupling between hydrogens bound to the same alkene carbon (referred to as geminal hydrogens) is very fine, generally 5 Hz or lower.

so 4Hz is correct

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