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Catalytic Properties

Identify the ...

Question

Identify the metal $M$ whose extraction is based on the following reactions:
$M S + 2 O_{2} ⟶ M {S O}_{4}$
$2 M S + 3 O_{2} ⟶ 2 M O + 2 S O_{2}$
$M S + 2 M O ⟶ 3 M + S O_{2}$
$M S + M {S O}_{4} ⟶ 2 M + 2 S O_{2}$

magnesium

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aluminium

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lead

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tin

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Solution

The correct option is C lead
Solution
First Reaction is Roasting
The third and Fourth Reaction are self-reduction reactions
Only lead goes through two times reduction.
The correct answer is C

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Similar questions

M S + 2 O_{2} \to M S O_{4};

2 M S + 3 O_{2} \to 2 M O + 2 S O_{2}

M S + 2 M O \to 3 M + S O_{2};

M S + M S O_{4} \to 2 M + 2 S O_{2}

M S + 2 O_{2} \to M S O_{4};

2 M S + 3 O_{2} \to 2 M O + 2 S O_{2}

M S + 2 M O \to 3 M + S O_{2};

M S + M S O_{4} \to 2 M + 2 S 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 :

Z n

2 Z n S + 3 O_{2} ⟶ 2 Z n O + 2 S O_{2}

Z n O + C ⟶ Z n + C O

△ G_{f}^{o}

k J m o l^{- 1}

Z n S = - 205.4, Z n O = - 318.0, S O_{2} = - 300.4

C O = - 137.3

M S O_{4}

2

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