Properties Of Bromine

Methods OF Preparation OF Alkane with Examples, Properties OF Alkanes (Photohalogenation - Flourination, Bromination, Iodination, Reed's Reaction, Nitration, Sulphonation, Isomerisation, Combustion, Aromatisation)

Which of the following properties of the elements chlorine, bromine and iodine increase with increasing atomic number?

Why does liquid bromine reacts slowly as compared to vapours of bromine?

Assertion (A) Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid. Reason (R) Lewis acid polarises the bromine molecule.

Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so ?

A Chloro compound (A) showed the following properties: (a) decolourised bromine water (b) absorbed hydrogen catalytically (C) gives precipitate with cuprous chloride, (d) when vaporized 1.49 g of (A) gave 448 mL of vapours at STP. Identify (A) and write down the reactions involved.