Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions:
Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions:
(a) 2AgBr (s) + C6H6O2(aq) → 2Ag(s) + 2HBr (aq) + C6H4O2(aq)
(b) HCHO(l) + 2[Ag (NH3)2] +(aq) + 3OH– (aq) → 2Ag(s) + HCOO– (aq) + 4NH3(aq) + 2H2O(l)
(c) HCHO(l) + 2Cu2(aq) + 5OH– (aq) → Cu2O(s) + HCOO– (aq) + 3H2O(l)
(d) N2H4(l) + 2H2O2(l) → N2(g) + 4H2O(l)
(e) Pb(s) + PbO2(s) + 2H2SO4(aq) → 2PbSO4(s) + 2H2O(l)
1 Answers
(a) Oxidised substance → C6H6O2
Reduced substance → AgBrO
xidising agent → AgBr
Reducing agent → C6H6O2
(b)Oxidised substance → HCHO
Reduced [Ag(NH3)2]+ substance →
Oxidising agent → [Ag(NH3)2]+
Reducing agent → HCHO
(c) Oxidised substance → HCHO
Reduced substance → Cu2+
Oxidising agent → Cu2+
Reducing agent → HCHO
(d) Oxidised substance → N2H4
Reduced substance → H2O2
Oxidising agent → H2O2
Reducing agent → N2H4
(e) Oxidised substance → Pb
Reduced substance → PbO2
Oxidising agent → PbO2
Reducing agent → Pb