Identify the substances that are oxidised and reduced in the following reactions
(i) 4Na (s) + O2 (g) ----> 2Na2O (s)
(ii) CuO (s) + H2 (g) -----> Cu (s) + H2 (l)
Answers
Answered by
2
Answer:
- sodium is oxidised i.e oxygen is added 2. copper is reduced i.e it. loses hydrogen
Answered by
2
Answer:
- 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 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.
Similar questions