Question

SECTION -
Carbon cannot be used as a reducing agent to obtain magnesium from magnesium
oxide. Why?
How is sodium obtained from molten sodium chloride? Explain with the help of a
chemical equation.
Give equations for obtaining copper from its sulphide ore.​

Answer 1

Answer:

Qno 1.Carbon cannot be used as a reducing to obtain magnesium from magnesium oxide as carbon cannot reduce more reactive metals from magnesium oxide so aluminum is used for obtaining a free metal of magnesium from magnesium oxide.

Qno 2. Sodium is obtained from molten sodium chloride by the process of electrolysis. when electric current is passed through molten sodium chloride it decomposes to form sodium metal and chlorine gas

2NaCl ---------------> 2Na + Cl2

Electrolysis

Roasting

Qno 3. 2Cu2S + 3O2. --–------------> 2Cu2O. + 2SO2

Heat

2Cu2O + Cu2S. -------------------->. 6Cu. +. SO2

Explanation:

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