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Extracting Metals Low in Reactivity Series

When Cu2S i...

Question

When $C u_{2} S$ is heated in air, the products obtained are _______ .

C u_{2} O

S O_{2}

and

C u

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C u_{2} O

and

C u O

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C u_{2} O

S O_{3}

and

C u

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C u O

S O_{2}

, and

C u

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Solution

The correct option is B $C u_{2} O$ , $S O_{2}$ and $C u$
When $C u_{2} S$ is heated in air, the products obtained are $C u_{2} O$ , $S O_{2}$ , and $C u$ .

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

$2 C u_{2} O + C u_{2} S Δ - \to 6 C u + S O_{2}$

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