Identify the substances that are oxidised and the substances that are reduced in the following reactions. (i) 4Na(s)+O_(2)(g) to 2Na_(2)O(s) (ii) CuO(s)+H_(2)(g) to Cu(s)+H_(2)O(I)

Identify the substances that are oxidised and the substances that are

1.	Identify the substances that are oxidised and the substances that are reduced in the following reactions. (i) 4Na(s)+O_(2)(g) to 2Na_(2)O(s) (ii) CuO(s)+H_(2)(g) to Cu(s)+H_(2)O(I)
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