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Extraction of Copper

The reaction ...

Question

The reaction that does not define calcination is:

Z n C O_{3} Δ - \to Z n O + C O_{2}

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F e_{2} O_{3} \cdot x H_{2} O Δ - \to F e_{2} O_{3} + x H_{2} O

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C a C O_{3} \cdot M g C O_{3} Δ - \to C a O + M g O + 2 C O_{2}

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2 C u_{2} S + 3 O_{2} Δ - \to 2 C u_{2} O + 2 S O_{2}

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Solution

The correct option is C $2 C u_{2} S + 3 O_{2} Δ - \to 2 C u_{2} O + 2 S O_{2}$
Calcination in carried out for carbonates and oxide ores in absence of oxygen. Roasting is carried out mainly for sulphide ores in presence of excess of oxygen.

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Similar questions

C a C O_{3} . M g C O_{3} Δ - \to C a O + M g O + C O_{2}

C u C O_{3} . C u (O H)_{2} Δ - \to 2 C u O + H_{2} O + C O_{2}

A l_{2} O_{3} .2 H_{2} O Δ - \to A l_{2} O_{3} + 2 H_{2} O

2 C u_{2} S + 3 O_{2} Δ - \to 2 C u_{2} O + 2 S O_{2}

S_{8} + 8 O_{2} Δ - \to 8 S O_{2} ↑

P_{4} + 5 O_{2} Δ - \to P_{4} O_{10} ↑

4 A s + 3 O_{2} Δ - \to 2 A s_{2} O_{3} ↑

2 Z n S + 3 O_{2} Δ - \to 2 Z n O + 2 S O_{2} ↑

Z n C O_{3} Δ - \to Z n O + C O_{2} ↑

A C a l c i n a t i o n - ------ \to C a O + M g O + 2 C O_{2}

A : F e O + S i O_{2} \to F e S i O_{3}

B : 2 F e S + 3 O_{2} \to 2 F e O + 2 S O_{2}

C : 2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}

D : 2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}

Select reactions actually taking place :

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