Step-by-step explanation:
a) remove chlorine atom from chloroethane using strong base such as NaOH
b) react ethane with Cl2 in the present of heat
c) cant directly
d) cant directly
e) subject n-hexane to high temperatures and catalysts, such as platinum (catalytic reforming) to rearranges the carbon atoms in n-hexane to form benzene
f) cant directly
g) react ethene with H2 (hydrogenation) in the presence of catalyst such as platinum
h) react ethene with H2O (hydration) in the presence of catalyst such as H3PO4