Types of Redox Reactions OXIDATION - REDUCTION Types of Redox Reactions Oxidation of zinc 0:38 Bozman Redox Reactions 02:00 – 03:00 Redox Reactions: Cartoon with flame –Yikes! 04:58 Redox Reactions: Crash Course Chemistry #10

Types of Redox Reactions Direct Combination OXIDATION - REDUCTION Types of Redox Reactions Direct Combination S (s) + O2 (g) -> SO2 (g)   2 Al (s) + 3 Br2 (l) -> 2 AlBr3 (s)

Decomposition 2HgO (s) -> 2 Hg (l) + O2 (g)  

Single Replacement Cu (s) + 2 AgNO3 (aq) -> Cu(NO3)2 (aq) + 2 Ag (s)   Net equation: Cu (s) + 2 Ag+ (aq) -> Cu+2 (aq) + 2 Ag (s)

Cu (s) + Mg2+ (aq) -> Na (s) + H2O (l) -> Activity Series – a listing that ranks metals according to their relative reactivity – (Table J) Cu (s) + Mg2+ (aq) ->   Na (s) + H2O (l) -> Zn (s) + H2SO4 (aq) ->

Cu (s) + Mg2+ (aq) -> No Reaction Na (s) + H2O (l) -> Activity Series – a listing that ranks metals according to their relative reactivity – (Table J) Cu (s) + Mg2+ (aq) -> No Reaction   Na (s) + H2O (l) -> Zn (s) + H2SO4 (aq) ->

Cu (s) + Mg2+ (aq) -> No Reaction Activity Series – a listing that ranks metals according to their relative reactivity – (Table J) Cu (s) + Mg2+ (aq) -> No Reaction   2 Na (s) + 2 H2O (l) -> NaOH (aq) + H2 (g) Zn (s) + H2SO4 (aq) ->  

Cu (s) + Mg2+ (aq) -> No Reaction Activity Series – a listing that ranks metals according to their relative reactivity – (Table J) Cu (s) + Mg2+ (aq) -> No Reaction   2 Na (s) + 2 H2O (l) -> NaOH (aq) + H2 (g) Zn (s) + 2 H2SO4 (aq) -> ZnSO4 (aq) + H2 (g)

Application of Redox Reactions Preventing corrosion can coat iron w/ oil, plastic or a less reactive metal to prevent rust - Fe2O3 Iron(III) oxide coated with Zn is galvanized steel   Bleaching used eliminate unwanted color from fabrics & other materials - (Cl2, NaClO, H2O2)

Fuels and explosives – release energy when oxidized – Fuels and explosives – release energy when oxidized – - nitroglycerine - C3H5(NO3)3 combustion => hydrocarbon + O2 → CO2 + H2O + heat   Photography – 2 Br- → Br20 + 2e- oxidation 2 Ag+ + 2e- → 2 Ag0 reduction

 Determining the oxidizing agent and what is the reducing agent Worksheet

Balancing RedOx Equations the fundamental principle in balancing RedOx equations is that the number of electrons lost in the oxidation reaction equals the number of electrons gained in the reduction reaction.