Question

6. Identify the substance that are oxidized and substance
hat are reduced in the following reaction
i).4Na + og -----72 Nao
ii) Cuct B -- Cu + HO
b) state of kind of chemical reaction in the following
xamples
a) Digestion of food in stomach
b) composition of coal in air​

Answer 1

Answer:

Explanation:

The substance that added with oxygen is said to be oxidized whereas removal of oxygen is called as reduction and the substance is said to be reduced.

So, we need to check the addition of oxygen or removal of oxygen to check the oxidation and reduction.  

(i) Na changes to . Hence, oxygen added so here Na oxidized and  reduced.  

(ii) CuO changes to Cu hence oxygen is removed from CuO. Hence, CuO is reduced and  is oxidized.

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