Help with the equation for the synthesis

2-chlorobutane from 1-butene and hydrogen chloride

for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct?

1 answer

2-chlorobutane from 1-butene and hydrogen chloride

CH2=CH-CH2CH3 + HCl ->

CH3-CH(Cl)-CH2-CH3

which is a straightforward addition reaction. Do you need to include conditions?

for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct?

Try (notice it is C6 not C5 and the prefix 1 are not needed).

C6H6+Br2->C6H5Br+HBr

which is a substitution reaction.

However, whilst the butene reaction will go in the cold (simply by bubbling HBr into a solution of the butene in a solvent, or even neat) the benzene one requires a Lewis acid catalyst such as FeBr3 to make it work.