Name the following:
A compound added to lower the fusion temperature of electrolytic bath in the extraction of aluminium.
Write a balanced equation for the following:
The action of dilute hydrochloric acid on sodium sulphide.
State your observation in each of the following cases:
When dilute hydrochloric acid is added to sodium carbonate crystal
When moist starch iodide paper is introduced into chlorine gas.
Moist starch iodide paper turns blue black.
Write balanced equation for the following:
The action of warm water on magnesium nitride.
State your observation in the following case:
When calcium hydroxide is heated with ammonium chloride crystal.
Write balanced equation for the following:
Action of heat on a mixture of copper and concentrated nitric acid.