Question

QUESTIONS.
Why should a magnesium ribbon be cleaned before burning in air?
Write the balanced equation for the following chemical reactions.
(1) Hydrogen + Chlorine - Hydrogen chloride
(11) Barium chloride + Aluminium sulphate -> Barium sulphate +
Aluminium chloride
(ii) Sodium + Water Sodium hydroxide + Hydrogen
Write a balanced chemical equation with state symbols for the
following reactions.
(i) Solutions of barium chloride and sodium sulphate in water react
to give insoluble barium sulphate and the solution of sodium
chloride
(ii) Sodium hydroxide solution in water) reacts with hydrochloric
acid solution (in water) to produce sodium chloride solution and
water​

Answer 1

Explanation:

magnesium ribbon must be cleaned before burning in air so that the layer of magnesium oxide can be removed in order to get desired chemical reaction