The reaction 2ZnS-3O2- 2ZnO-2SO2 in the metallurgical process of zinc is called

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Standard XII

Chemistry

Extraction of Zinc

The reaction ...

Question

The reaction $2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2}$ in the metallurgical process of zinc is called

Calcination

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Cupellation

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Smelting

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Roasting

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Solution

The correct option is D Roasting
Roasting is the process in which concentrated ore is heated to high temperatures in presence of excess of air. It will convert sulphides to metal oxides and $S O_{2}$ and remove arsenic and sulphur impurities and water of hydration.
$2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2}$

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Similar questions

2 Z n + O_{2} ⟶ 2 Z n O; Δ G^{o} = - 616 J . . (i)

2 Z n + 2 S ⟶ 2 Z n S; Δ G^{o} = - 293 J . . . (i i)

2 S + 2 O_{2} ⟶ 2 S O_{2} (g); Δ G^{o} = - 408 J . . (i i i)

Δ G^{o}

for the following reaction:

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

would be:

Consider following reactions:

(a) $2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2}$

$Z n O + C \to Z n + C O$

(b)

2 Z n S + C \to 2 Z n + C S_{2}

Which reaction has more positive value of

Δ G

?
1. A
2. B
3. A and B are same
4. None

Q. Consider the reaction:

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

This reaction has an

80.0

yield.
What mass of

Z n O

is produced when

50.0 g Z n S

is heated in an open vessel untill no further weight loss is observed?

Q. Consider the following reaction between zinc and oxygen and choose the correct options out of the options given below:

2 Z n (s) + O_{2} (g) \to 2 Z n O (s)

;

Δ H = - 693.8 k J m o l^{- 1}

The chief ore of

Z n

is the sulphide,

Z n S

. The ore is concentrated by froth floatation process and then heated in air to convert

Z n S

Z n O

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

(

75 %

conversion)

Z n O + H_{2} S O_{4} \to Z n S O_{4} + H_{2} O

(

100 %

conversion )

2 Z n S O_{4} + 2 H_{2} O \to 2 Z n + 2 H_{2} S O_{4} + O_{2}

(

80 %

conversion)

The mass of

Z n

obtained from a sample of ore containing

292.2

kg of

Z n S

will be :

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The reaction 2ZnS+3O2→2ZnO+2SO2 in the metallurgical process of zinc is called

The correct option is D RoastingRoasting is the process in which concentrated ore is heated to high temperatures in presence of excess of air. It will convert sulphides to metal oxides and SO2 and remove arsenic and sulphur impurities and water of hydration. 2ZnS+3O2→2ZnO+2SO2

The reaction $2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2}$ in the metallurgical process of zinc is called