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Identify the substances that are oxidised and the substances that are reduced in the following reactions:

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asked Feb 7, 2018 in Chemistry by sforrest072 (157,439 points) ● 61 ● 410 ● 937

Identify the substances that are oxidised and the substances that are reduced in the following reactions:

i. 4Na(s) + O2(g) → 2Na2O(s)
ii. CuO(s) + H2(g) → Cu(s) + H2O(I)

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answered Feb 7, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Feb 7, 2018 by sforrest072
 
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i. In the given reaction, sodium gets oxidised to sodium oxide (Na2O) and oxygen gets reduced.
ii. In the given reaction, hydrogen getsoxidised to water and copper (II) oxide gets reduced to copper metal.

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