Which one of the following reactions is an example for calcination process?

2 A g + 2 H C l + (O) ⟶ 2 A g C l + H_{2} O

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2 Z n + O_{2} ⟶ 2 Z n O

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

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{M g C O}_{3} ⟶ M g O + {C O}_{2}

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Solution

The correct option is D ${M g C O}_{3} ⟶ M g O + {C O}_{2}$
The concentrated ore is heated in absence of air to remove water or moisture from a hydrated oxide and $C O_{2}$ from a carbonate ore at a temperature below their melting point. This process is called Calcination and is generally carried out in a reverberatory furnace. $C O_{2}$ is released from carbonate ore of $M g$ .

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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}

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

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

For the reactions

$C + O_{2} \to C O_{2};$ $Δ H = - 393 J$

$2 Z n + O_{2} \to 2 Z n O;$ $Δ = - 412 J$

C + O_{2} ⟶ C O_{2}; Δ H = - 393 J

2 Z n + O_{2} ⟶ 2 Z n O; Δ H = - 412 J J

Consider following reactions:

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

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

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

Δ G

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