Which of the following reaction(s) occur during calcination ?

C a C O_{3} (s) \to C a O (s) + C O_{2} (g)

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4 F e S_{2} (s) + 11 O_{2} (g) \to 2 F e_{2} O_{3} (s) + 8 S O_{2} (g)

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F e_{2} O_{3} . x H_{2} O (s) \to F e_{2} O_{3} (s) + x H_{2} O (g)

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C u S (s) + C u S O_{4} (s) \to 2 C u (s) + 2 S O_{2} (g)

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Solution

The correct option is C

$F e_{2} O_{3} . x H_{2} O (s) \to F e_{2} O_{3} (s) + x H_{2} O (g)$
During Calcination
$Metal Carbonates Δ - \to Metal Oxides Hydrated ores Δ - \to Anhydrous oxide$
$F e_{2} O_{3} . x H_{2} O (s) Δ - \to F e_{2} O_{3} (s) + x H_{2} O (g) Z n C O_{3} (s) Δ - \to Z n O (s) + C O_{2} (g) C a C O_{3} . M g C O_{3} (s) Δ - \to C a O (s) + M g O (s) + 2 C O_{2} (g)$
Hence (a) and (c) are correct.

Suggest Corrections

Similar questions

C a C O_{3} \to C a O + C O_{2}

4 F e S_{2} + 11 O_{2} \to 2 F e_{2} O_{3} + 8 S O_{2}

2 A l (O H)_{3} \to A l_{2} O_{3} + 3 H_{2} O

C u_{2} S + 2 C u O \to 4 C u + S O_{2}

Which of the following reactions could be termed as calcination?

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