Question

identify the substances that are oxidised and substance that are reduced in the following reactions 4na+o2=2na2o or cu​

Answer 1

Answer:

(i) Na changes to Na2O Hence, oxygen added so here Na oxidized and O2 reduced. (ii) CuO changes to Cu hence oxygen is removed from CuO. Hence, CuO is reduced and H2 is oxidized.

Answer 2

Na changes to Na2O Hence, oxygen added so here Na oxidized and O2 reduced. (ii) CuO changes to Cu hence oxygen is removed from CuO. Hence, CuO is reduced and H2 is oxidized.

hope it helps

pls flow me