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Justify that the reaction 2Cu(2)O(s)+C...

Justify that the reaction
`2Cu_(2)O_(s)+Cu_(2)S(s)rarr6Cu(s)+SO_(2)(g)` a redox reaction. Identify the species oxidised`//`reduced. Which acts as an oxidanat and which acts as a reductant?

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
The oxidation states are as :
`2overset(+1)(Cu_(2))overset(-2)O_((s))+ overset(+1)(Cu_(2))overset(-2)S_((2))rarr6overset(0)(Cu)_((s))+overset(+4)(S)overset(-2)O_(2(g))`
Copper is reduced from +1 state to zero. Sulphur is oxidised from -2 state to +4. `Cu_(2)O` helps sulphur in `Cu_(2)S` to increase its oxidation number, hence Cu(I) is an oxidant and sulphur of `Cu_(2)S` helps copper both in `Cu_(2)S` and `Cu_(2)O` to decrease its oxidation number, hence S of `Cu_(2)S` is a reductant. And the reaction is redox reaction.
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