Stoichiometry Quantitative Chemistry

- Stoichiometry is a branch of chemistry that deals with the quantitative analysis of chemical reactions
- It is a generalization of mole conversions to chemical reactions
- Understanding 6 types of chemical reactions is the foundation of Stoichiometry

6 types of Reactions

1. Synthesis ( formation )
2. Decomposition
3. Single Replacement ( SR )
4. Double Replacement ( DR )
5. Neutralization
6. Combustion

Synthesis

- A+B ---> AB
- usually elements ---> Compounds

Decomposition

- AB ---> A+B
- Reverse of synthesis
- Always assume the compounds decompose into elements during decomposition

Single Replacement (SR)

- A+BC ---> B+AC

Double Replacement (DR)

- AB+CD ---> AD+BC

Neutralization

- Reaction between an acid and a base

Combustion

- Reactions of something (usually hydrocarbon) with air
- Hydrocarbon combustion always produces CO2 and H2O