You visited us 1 times! Enjoying our articles? Unlock Full Access!

Stoichiometry

Justify that ...

Question

Justify that the following reactions are redox reactions:

$C u O (s) + H_{2} (g) \to C u (s) + H_{2} O (g)$

Open in App

Solution

The oxidation number of $C u$ decreases from $+ 2$ to $0$ and that of $H$ increases from $0$ to $+ 1$ .

Hence, $C u O$ is reduced to Cu and $H_{2}$ is oxidized to $H_{2} O$ .

Hence, it is a redox reaction.

Suggest Corrections

Similar questions

Justify that the following reactions are redox reactions:

(a) CuO(s) + H₂(g) → Cu(s) + H₂O(g)

(b) Fe₂O₃(s) + 3CO(g) → 2Fe(s) + 3CO₂(g)

(d) 2K(s) + F₂(g) → 2K+F– (s)

(e) 4 NH₃(g) + 5 O₂(g) → 4NO(g) + 6H₂O(g)

2 H_{2} S_{(g)} + S O_{2 (g)} \to 3 S_{(s)} + 2 H_{2} O_{(1)}

C u O_{(s)} + H_{2 (g)} \to C u_{(s)} + H_{2} O

4 B C l_{3} (g) + 3 L i A l H_{4} (g) \to 2 B_{2} H_{6} (g) + 3 L i C l (s) + 3 A l C l_{3} (s)

Identify the substances that are oxidised and the substances that are reduced in the following reactions.

(i)

(ii)

:

C u O +

= 62.869 g

C a C l_{2} +

= 80.483 g

+

= 54.869 g

C a C l_{2} + U

= 89.483 g

Z n (s) + 2 H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)

H_{2} (g) + C u O (s) \to H_{2} O (g) + C u (s)

Join BYJU'S Learning Program