CLASSIFYING CHEMICAL REACTIONS

 

Oxidation-Reduction Reactions

Type of Reaction

Examples

Signature

Synthesis (or Combination)

Generic: A + X --> AX

S(s) + O2(g) --> SO2(g)

CaO(s) + H2O(l) Ca(OH)2(aq)

One Product

Decomposition

Generic: AX --> A + X

CaCO3(s) --> CaO(s) + CO2(g)

2 H2O(l) --> 2 H2(g) + O2(g)

One Reactant

Single Replacement

Generic: A + BX --> AX + B

2 Al(s) + 3 CuCl2(aq) --> 3 Cu(s) + 2 AlCl3(aq)

Cl2(g) + 2 HBr(aq) --> Br2(l) + 2 HCl(aq)

 

Combustion

Generic: [compound with C, H and/or O] + O2(g) CO2(g) + H2O(l)

CH4 + 2 O2(g) --> CO2(g) + 2 H2O(l)

2C2H6 + 7 O2(g) --> 4 CO2(g) + 6 H2O(l)

 

 

NOT Oxidation-Reduction

Type of Reaction

Examples

Signature

Double Displacement

Generic: AX + BY --> AY + BX

Precipitation: BaCl2(aq) + K2CO3(aq) --> BaCO3(s) + 2 KCl(aq)

Acid-Base: HCl(aq) + NaOH(aq) --> H2O(l) + 2 NaCl(aq)