Write the mechanism of the following reaction:

Draw the structures of the following:

(i) XeF₂

(ii) BrF₃

Write the equations involved in the following reactions:
(i) Reimer – Tiemann reaction
(ii) Williamson synthesis

Write the name of monomers used for getting the following polymers:
(i) Bakelite
(ii) Neoprene

(a) Calculate Δ_rG⁰ for the reaction:

Mg(s) + Cu²⁺ (aq) → Mg²⁺(aq) + Cu(s)

(Given: E⁰_cell = +2.71V, 1F = 96500 C/mol)

(b) Name the type of cell which was used in Apollo space programme for providing electrical power.