1)Why should a magnesium ribbon be cleaned before burning in air?
2)Write the balanced equation for the following chemical reactions.
(1) Hydrogen + Chlorine - Hydrogen chloride
(11) Barium chloride + Aluminium sulphate
Barium sulphate +
Aluminium chloride
(iii) Sodium + Water - Sodium hydroxide + Hydrogen
3)Write a balanced chemical equation with state symbols for the
following reactions.
(1) Solutions of barium chloride and sodium sulphate in water react
to give insoluble barium sulphate and the solution of sodium
chloride..
(11) Sodium hydroxide solution (in water) reacts with hydrochloric
acid solution in water) to produce sodium chloride solution and
water.
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Answer:
ExplanMagnesium ribbon should be cleaned with sandpaper before burning in the air because of the following reasons: Magnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.ation:
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