Which of the following reactions are examples of roasting-CaCO-3-s- - CaO -s- - CO-2-g-4FeS-2-s- - 11O-2-g- - 2Fe-2O-3-s- - 8SO-2-g-2Al-OH-3-s- - Al-2O-3-s- - 3H-2O -l-2CuS-s- 2O-2-g- - 2Cu-s- - nbsp-2SO-2-g-

The correct options are B 4FeS_2(s) + 11O_2(g) → 2Fe_2O_3(s) + 8SO_2(g) D 2CuS(s)+ 2O_2(g) → 2Cu(s) + nbsp;2SO_2(g)Roasting is a process in which an ore is he ...

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Byju's Answer

Standard X

Chemistry

Roasting

Which of the ...

Question

Which of the following reactions are examples of roasting?

{CaCO}_{3} (s)

\to

CaO (s) + {CO}_{2} (g)

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4 {FeS}_{2} (s)

{11O}_{2} (g)

\to

2 {Fe}_{2} O_{3} (s)

8 {SO}_{2} (g)

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2 {Al(OH)}_{3} (s)

\to

{Al}_{2} O_{3} (s)

{3H}_{2} O (l)

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2 CuS(s)

2 O_{2} (g)

\to

2 Cu(s)

{2SO}_{2} (g)

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Solution

The correct options are
B $4 {FeS}_{2} (s)$ + ${11O}_{2} (g)$ $\to$ $2 {Fe}_{2} O_{3} (s)$ + $8 {SO}_{2} (g)$
D $2 CuS(s)$ + $2 O_{2} (g)$ $\to$ $2 Cu(s)$ + ${2SO}_{2} (g)$
Roasting is a process in which an ore is heated in the presence of oxygen to convert it into metal oxide. Roasting is generally used for sulphide ores. For example:
$4 {FeS}_{2} (s)$ + ${11O}_{2} (g)$ $\to$ $2 {Fe}_{2} O_{3} (s)$ + $8 {SO}_{2} (g)$
$2 CuS(s)$ + $2 O_{2} (g)$ $\to$ $2 Cu(s)$ + ${2SO}_{2} (g)$

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Similar questions

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(iii)

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(iv)

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