Strong acids can be identified as
- Hydrophilic acids such as HBr
- Oxyacids with 1 or more oxygen atoms than the number of ionizable protons such as H3PO4
Weak acids can be identified as
- Hydrofluoric acid
- Acids with no oxygen nor halogen atom such as HCN
- Oxyacids with 2 less or equal number of an oxygen atom to the number of ionizable protons such as H2SO4
- Carboxylic acids such as HCOOH
Strong bases can be identified as
- Hydroxides of group 1 metals such as KOH
- Hydroxides of group 2 metals such as Sr(OH)2
- Oxides of the same metals
Weak bases can be identified as
- Nitrogen atoms that have 3 bond(s) and 1 lone pair(s) such as CH3NH2