A) 2-phenol sulphonic acid, a major product
B) 4-phenol sulphonic add, a major product -
C) Both (a) and (b)
D) None of the above
Correct Answer: A
Solution :
Sulphonation of phenol, gives a mixture of ortho and para isomers. If sulphonation is carried out at low temperature, kinetically controlled ortho-isomer is the chief product and if sulphonation is carried out at high temperature, thermodynamically controlled para-isomer is the chief product.You need to login to perform this action.
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