Question

. Identify the substances that are oxidised and the substances that are reduced in the following reactions. (1) 4Na(s) + O2(g) → 2Na, O(s) (ii) CuO(s) + H, (g) → Cu(s) + H, 0(1)​

Answer 1

Answer:

b

is the answer

Explanation:

Answer 2

Answer:

(i) 4Na(s) + O2(g) → 2Na2O(s) (ii) CuO(s) + H2(g) → Cu(s) + H2O(l) In this reaction sodium is oxidised because oxygen combines to sodium form sodium oxide and oxygen is reduced because it is converted into sodium oxide.