Question

Identify if the following reactions are examples of a redox reaction.
1. NaOH + HCI NaCl + H2O
2. CH4 + 02 - CO2 + H2O
3. MnO2 + Al- Mn + Al2O3
4. Cuo + H2S04 - CuSO4 + H2O
5. CuO + H2 - Cu + H2O​

Answer 1

Answer:

2, 3 and 5 are examples of redox reactions

Explanation:

In example 2 , methane is oxidised to carbon dioxide and oxygen is reduced to water. In example 3 , Al is oxidised to aluminum oxide Al2O3 and MnO2 is reduced to Mn. In example 5 , H2 is oxidised to H2O and CuO is reduced to Cu.