Naveen Kumar
Last Activity: 10 Years ago
You are absolutely write , the compound formed is also optically active but in sulphonation, there will be two types of product formed and those are called enantiomer. Here at the chiral centre, in one enantiomer, the Me group would be upward and in other one it would be downward.
The product contains these two enantiomers in 1:1 ratio.
As these two enantiomers, rotate light equally but in opposite direction so overall the rotation of light is zero due to equal amount of both the products and hence this mixture is called as racemic mixture (having 0 net rotation).