How would you carry out the following conversion? Write equations.
i) `H_(3)C-CH_(2)-CH=CH_(2)rarrH_(3)C-CH_(2)-CH_(2)-CH_(2)OH`
ii) `H_(3)C-CH_(2)-CH=CH_(2)rarrH_(3)C-CH_(2)-CH(OH)-CH_(2)OH`
iii) `Br_(2)CH-CHBr_(2)rarrHC-=CH`

Explanation

i) `H_(3)C-CH_(2)-CH=CH_(2)underset("ii)"H_(2)O_(2)//OH^(-))overset("i)"(BH_(3))_(2))rarrH_(3)C-CH_(2)-CH_(2)-CH_(2)OH`
ii) `H_(3)C-CH_(2)-CH=CH_(2)+H_(2)O+(O)overset(KMnO_(4)//OH^(-))rarrH_(3)C-CH_(2)-CH(OH)-CH_(2)OH`
iii) `Br_(2)CH-CHBr_(2)+2Znoverset("Heat")rarrHC-=CH+2ZnBr_(2)`