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Endothermic and Exothermic Reaction

Which of the ...

Question

Which of the following reaction in the blast furnace is/are endothermic?

C

(s) +

O_{2}

(g)

⇋

C O_{2}

(g)

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C O_{2}

(g) +

C

(s)

⇋

2 C O

(g)

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C a C O_{3}

(s)

⇋

C a O

(s) +

C O_{2}

(g)

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F e_{2} O_{3}

(s)+

3 C O

(g)

⇋

2 F e (l)

3 C O_{2}

(g)

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Solution

The correct options are
B $C a C O_{3}$ (s) $⇋$ $C a O$ (s) + $C O_{2}$ (g)
D $C O_{2}$ (g) + $C$ (s) $⇋$ $2 C O$ (g)
In blast furnace, following two endothermic reactions occur.
(1) Reaction between carbon dioxide and carbon to form carbon monoxide.
$C O_{2} (g) + C (s) ⇋ 3 C O (g)$
(2) Decomposition of calcium carbonate to form calcium oxide and carbon dioxide.
$C a C O_{3} (s) ⇋ C a O (s) + C O_{2} (g)$

Suggest Corrections

Similar questions

C + O_{2} \to C O_{2}

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

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

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

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

C + O_{2} \to C O_{2}

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

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

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

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

F e_{2} O_{3} + 3 C \to 2 F e + 3 C O

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

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

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

128 g

C a C_{2}

C a C O_{3}

C a C O_{3} (s) \to C a O (s) + C O_{2} (g); △ H^{o} = 42 .8 kcal

C a O (s) + 3 C (s) \to C a C_{2} (s) + C O (g); △ H^{o} = 111 kcal

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