Which of the following two substances react to produce blister copper?

C u_{2} S_{(s)}

and

C u_{2} O_{(s)}

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C u_{2} O_{(s)}

and

F e S_{(s)}

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C u_{2} S_{(s)}

and

O_{2 (g)}

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C u_{2} S_{(s)}

and

F e S_{2 (s)}

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Solution

The correct option is A $C u_{2} S_{(s)}$ and $C u_{2} O_{(s)}$
Blast of air converts $C u_{2} S$ partly into $C u_{2} O$ which reacts with remaining $C u_{2} S$ to give molten copper. The copper so obtained is called "Blister copper" because, as it solidifies, $S O_{2}$ hidden in it escapes out producing blister on its surface
option A is correct

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Similar questions

2 {C u}_{2} O (s) + {C u}_{2} S (s) ⟶ 6 C u (s) + 5 O_{2} (g)

2 C u_{2} O_{(} s)

C u_{2} S_{(} s)

\to

6 C u_{(} s)

S O_{2 (g)}

C u_{2} O

Name the process used for the formation of blister $C u$ by following reaction :(unbalanced reactions)

$2 C u_{2} S + 3 O_{2} \to C u_{2} O + S O_{2}$

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

H C H O (1) + 2 C u^{2 +} (a q) + 5 O H^{-} (a q) \to C u_{2} O (s) + H C O O^{-} (a q)

+ 3 H_{2} O (l)

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