Question

1.Why should a magnesium ribbon be cleaned before burning in air?
2.Write the balanced equation for the following chemical reactions.
(i) Hydrogen + Chlorine → Hydrogen chloride
(ii) Barium chloride + Aluminium sulphate → Barium sulphate +
Aluminium chloride
(iii) Sodium + Water Sodium hydroxide + Hydrogen
gas


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Answer 1

1) It should be cleaned before burning due to the following reasons: ... To remove the Magnesium oxide layer from the ribbon which may prevent

or slow down the burning of magnesium ribbon. Unwanted impurities deposited on the magnesium ribbon can be removed and only pure magnesium can be used for the reaction

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Answer 2

Answer:

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