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  • Write balanced chemical equations to explain what happens, when (i) Mercuric oxide is heated. (ii) Mixture of cuprous oxide and cuprous sulphide is heated. (iii) Aluminium is reacted with manganese dioxide. (iv) Ferric oxide

Write balanced chemical equations to explain what happens, when
(i) Mercuric oxide is heated.
(ii) Mixture of cuprous oxide and cuprous sulphide is heated.
(iii) Aluminium is reacted with manganese dioxide.
(iv) Ferric oxide is reduced with aluminium.
(v) Zinc carbonate undergoes calcination.

 

 

 

 
 
 
 
 

Answers (1)

Balanced chemical equations are as follows- 

(i) When Mercuric oxide is heated - 

2HgO Heat 2 Hg + O2

(ii) When Mixture of cuprous oxide and cuprous sulphide is heated-

2Cu2 O + 2Cu2S Heat 6Cu + SO2

(iii) When Aluminium is reacted with manganese dioxide

3MnO2 + 4 Al → 2Al2O3 + 3Mn +heat

(iv) When Ferric oxide is reduced with aluminium

Fe2O3 + 2 Al → Al2O3 + 2Fe + heat

(v) When Zinc carbonate undergoes calcination]

ZnCO3 Heat ZnO + CO2 

Posted by

Safeer PP

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