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Reactivity Towards Thermal Decomposition of Metal Compounds

Question 12 d...

Question

Question 12 (d)

Give reason why carbonate and sulphide ores are usually converted into oxides during the process of extraction.

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Solution

Carbonate and sulphide ores are usually converted into oxides during the process of extraction because metals can be easily extracted by the reduction of their oxides rather than from their carbonates and sulphides.

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Q. Give reason why carbonate and sulphide ores are usually converted into oxides during the process of extraction?

Give the reason for the following:
Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Give reasons

(a) Platinum, gold and silver are used to make jewellery.

(b) Sodium, potassium and lithium are stored under oil.

(c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.

(d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

Give reasons for:

a) Platinum, gold and silver are used to make jewellery.

b) Sodium, potassium and lithium are stored under oil.

c) Aluminium is a highly reactive metal, yet it is used to make utensils.

d) Carbonate and sulphide ores are usually converted into their oxides during the process of extraction.

e) Copper vessels, when exposed to air, form a greenish coating all around.

Q. Question 39
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?

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Reactivity Towards Thermal Decomposition of Metal Compounds

Standard IX Chemistry

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