Chemistry
Answer the following questions related to the electrolytic reduction of pure Alumina by Hall Heroult’s process.
(a) The reaction occurring at the anode.
(b) The reaction occurring at the cathode.
Related Questions
Draw the dot and cross structure of the following:
(a) Hydronium ion
(b) Oxygen molecule
(c) Calcium oxide
[Atomic number: H = 1, O = 8, Ca = 20]
Given below is the diagram for the laboratory preparation of Nitric Acid.
(a) Name the reactant labelled Y.
(b) Write a balanced equation for the reaction between Y and KNO3.
(c) The complete apparatus is made up of glass. Why?
(d) State why concentrated HNO3 appears slightly yellowish in colour when left standing in a glass bottle for a long time.
Give the chemical formula of the following ores:
(a) Cryolite
(b) Haemetite
Write the balanced equations for the following reactions:
(a) Potassium bicarbonate reacts with dilute HCl.
(b) Laboratory preparation of ethane using soda lime.
(c) Warm water is added to Aluminium nitride.