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→ KCl + 2O2 (g)
KClO4
→ CuO (s)
Reacts with metal forming a metal
oxide
Cu (s) + O2 (g)
→ Fe2O3 (s)
Reacts with metal forming a metal
oxide
Fe (s) + 3O2 (g)
Red litmus paper → blue color
Fe2O3 (s) + H2O (l) → Fe(OH)3 (aq)
Blue litmus paper → red color
CO2 (g) + H2O (l) → H2CO3 (aq)
→ CO2 (g)
• Reacts with non metal to form
non-metal oxide
C (s) + O2 (g)
Red litmus paper → blue color
Na + H2O → NaOH + H2
Hydrogen popping
H2 (g) + 2O2 (g) → 2 H2O (g)
Magnesium can react with steam to displace oxygen in
the water molecules
Mg (s) + H2O (g) → MgO (s) + H2 (g)
→ ZnO (s) + H2 (g)
Zn (s) + H2O (g)
→ no reaction
Cu (s) + H2O (g)
→ Al2O3 (s) + 3H2 (g)
2Al (s) + 3H2O (g)
→ ZnCl2 (aq) + H2 (g)
Zinc in hydrochloric acid
Zn (s) + 2HCl (aq)
→ no reaction
Cu (s) + HCl (aq)
→ 2 AlCl3 (s) + 3 H2 (g)
2 Al (s) + 6 HCl (aq)
→ CaO (s) + CO2 (g)
CaCO3 (s)
CO2 (s) + H2O (l)
→ H2CO3 (aq)
Blue litmus paper → red color
→ Ca(OH)2 (aq)
Red litmus paper → blue color
CaO (s) + H2O (l)
BaCO3 → BaO + CO2
Thermal Decomposition
→ Ca(OH)2 (aq)
Red litmus paper → blue color
Preparation of bases
CaO (s) + H2O (l)
→ Ba(OH)2 (aq)
Red litmus paper → blue color
Preparation of bases
BaO (s) + H2O (l)
HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)
Preparation of NaCl
→ NaCl (s) – white residue
Evaporate to dryness: NaCl (aq)
Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
Preparation of ZnSO4
ZnSO4 (aq) → ZnSO4 (s) – white residue
Evaporate to dryness:
NaOH (aq)
SA
HCl (aq)
SB
NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l)
SA + SB
HCl (aq)
SA
NH4OH (aq)
WB
NH4
+ (aq) + H2O (l) ⇌ H3O+ (aq) + NH3
NH4Cl is an acidic salt
HCN (aq)
WA
NaOH (aq)
SB
HCN (aq) + NaOH (aq) → NaCN (aq) + H2O (l)
WA + SB
NaCN is a basic salt
CN- (aq) + H2O (aq) ⇌ HCN (aq) + OH- (aq)
→ CH3COONH4 (aq) + H2O (l)
Acid with Base Reaction
CH3COOH (aq) + NH4OH (aq)
+ = 5.6 x 10-10
Ka NH4
= 5.6 x 10-10
Kb for CH3COO-
→ CaC2O4 (s) + 2 HCl
Acid with Salt
CaCl2 (aq) + H2C2O4 (aq)
Acid with Carbonate Salts
→ NaCl (aq) + CO2 (g) + H2O (l)
NaHCO3 (aq) + HCl (aq)
→ Cu(OH)2 (s) + Na2SO4 (aq)
* Double displacement reaction
Salts with Bases
CuSO4 (aq) + 2 NaOH (aq)
Salts with Salt
→ AgCl (s) + NaNO3 (aq)
*double displacement reaction
NaCl (aq) + AgNO3 (aq)