The addition of HBr of 1-butene gives a mixture of products A,B and C

(C) `CH_(3)-CH_(2)-CH_(2)-CH_(2)-Br`
The mixture consists of

Options

A. x and y as major and z as minor products
B. y as major, x and z as minor products
C. y as minor, x and z as major products
D. x and y as minor nad z as major products

Answer

A

Explanation

The alkene is unsymmetrical, hence will follow Markownikoff.s rule to give major product
`underset("But-1-ene")(CH_(3)-CH_(2))-CH= CH_(2) + H- Br rarr CH_(3) -CH_(2)- underset((x))(CHBr) - CH_(3) + underset((y))(C_(2)H_(5)- underset(underset(H)(|))overset(overset(Br)(|))(C)""_(**)- CH_(3)) + CH_(3)- underset((z)"Minor product")(CH_(2)-CH_(2)-CH_(2)Br)`
Since, y contains, a chiral carbon, it exists in two enantiomers (x and y ) which are mirrow images of each other.