v) In the extraction of aluminium(a) Name the process of concentration

1.	v) In the extraction of aluminium(a) Name the process of concentration of bauxite.(b) Write the cathode reaction in electrolytic reduction ofalumina.(c) Write an equation for the action of heat on aluminiumhydroxide.
Answer» (a) The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide). (b) Al3+ + 3e- ----> Al (c) The equation for the action of heat on aluminium hydroxide is as follows. 2 Al (OH) ₃ → Al₂O₃ + 3H₂O

v) In the extraction of aluminium(a) Name the process of concentration of bauxite.(b) Write the cathode reaction in electrolytic reduction ofalumina.(c) Write an equation for the action of heat on aluminiumhydroxide.

Answer»

(a) The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide).

(b) Al3+ + 3e- ----> Al