Chemistry
Give equations for the purification of bauxite. Name the process involved.
Metallurgy
3 Likes
Answer
Al2O3.2H2O + 2NaOH ⟶ 2NaAlO2 + 3H2O
NaAlO2 + 2H2O ⟶ NaOH + Al(OH)3
2Al(OH)3 Al2O3 + 3H2O
The process is called 'Bayer's process'.
Answered By
2 Likes
Related Questions
Write a balanced equation by taking an example of your own.
(i) An acid and an alkali.
(ii) An ammonium salt and an alkali
(iii) A nitrate and a mineral acid
(iv) A hydrocarbon and oxygen in excess
(v) A metal hydrogen carbonate and an acid.
5.72 grams of hydrated sodium carbonate is heated strongly. The white residue left over is 2.12 g. Calculate:
(i) the formula of hydrated sodium carbonate
(ii) the percentage of carbon in the compound.
[Na = 23, C = 12, O = 16, H = 1]
Within a Group, where would you expect to find the element with :
(i) the greatest metallic character ?
(ii) the largest atomic size ?
Define ionisation potential ? State whether it increases on going down a group.