Question

Translate the following statements into chemical equations and then balance them
a) Barium chloride reacts with Aluminium sulphate to give Aluminium chloride and a precipitate of
Barium sulphate.
b) Sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride
solution and water.
c) Hydrogen gas combines with Nitrogen to form Ammonia.​

Answer 1

Explanation:

Magnesium is an very reactive metal. When stored, it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper for removing this layer so that the underlying metal can be exposed to air.