Chemistry
The following questions relate to the extraction of Aluminium by electrolysis.
(a) Name the other aluminium containing compound added to alumina.
(b) Give a balanced equation for the reaction that takes place at the cathode.
Related Questions
The electron affinity of an element X is greater than that of element Y.
(a) How is the oxidising power of X likely to compare with that of Y?
(b) How is the electronegativity of X likely to compare with that of Y?
(c) State whether X is likely to be placed to the left or to the right of Y in the periodic table?
You are provided with the list of chemicals mentioned below in the box:
Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron Using suitable chemicals from the list given, write balanced chemical equation for the preparation of the salts mentioned below:
(a) copper sulphate
(b) sodium zincate
(c) ferric chloride
Pratik heated 11.2 grams of element ‘M’ (atomic weight 56) with 4.8 grams of element ‘N’ (atomic weight 16) to form a compound. Find the empirical formula of the compound obtained by Pratik.
Give balanced equations for each of the following:
(a) Action of warm water on Aluminium nitride.
(b) Oxidation of carbon with conc. Nitric acid.
(c) Laboratory preparation of ethanol by using chloroethane and aqueous sodium hydroxide.