Question

Identify from the following reactions the reactants that undergo oxidation and reduction.
a. Fe + S → FeS
b. 2Ag₂O → 4 Ag + O₂ ↑
c. 2Mg + O₂ → 2MgO
d. NiO + H₂ → Ni + H₂

Answer 1

(a)  Fe + S → FeS

Here, 'Fe' is oxidised from 0 to +2, while 'S' is reduced from 0 to -2

(b) 2Ag₂O → 4 Ag + O₂

'Ag' is reduced from +1 to 0, and oxygen is oxidised from -2 to 0

(c) 2Mg + O₂ → 2MgO

'Mg' is oxidised from 0 to +2, and 'O' is reduced from 0 to -2

(d) NiO + H₂ → Ni + H₂O

'Ni' is reduced from +2 tp 0, and 'H' is oxidised from 0 to +1

Answer 2

Answer:

• Fe + S → FeS

Here, 'Fe' is oxidised from 0 to +2, while 'S' is reduced from 0 to -2

• 2Ag₂O → 4 Ag + O₂

'Ag' is reduced from +1 to 0, and oxygen is oxidised from -2 to 0

•  2Mg + O₂ → 2MgO

'Mg' is oxidised from 0 to +2, and 'O' is reduced from 0 to -2

• NiO + H₂ → Ni + H₂O

'Ni' is reduced from +2 tp 0, and 'H' is oxidised from 0 to +1

Hope It Helps You Friend !!