CHM Ch 20-21
Strong Acids
HCl, HBr, HI, HNO3, HClO4, H2SO4
Weak Acids
HF, HNO2, HSO4, CH3COOH, HCN
Strong Bases
Everything in the first column down (NaOH, LiOH, KOH etc...)
Why do strong bases work?
because they form an OH- group that bases hydrogens around creating base rxns.
Weak Bases
NH3, CH3NH2, RNH2
Acid Strength goes up as...
Ka gets larger
Acid strength goes down as...
Ka value gets smaller
Base strength goes up as...
Kb increases
Base strength decearses as...
Kb decreases
How to calculate pH
pH = -log(H3O+)
How to calculate pOH
pOH = -log(OH-)
Do Strong Acids/Bases have a K value?
NO
Spectator ions
Br-, I-, Cl-, Na+, NO3-, K+, Li+,
Ka/Kb
10^-pKa/Kb
pKa/Kb
-log(ka/kb)
Ka
Kw/Kb
Kb
Kw/Ka
pH
-log(H+/H3O+)
pOH
-log(OH-)
pH
[H3O+/H+] - [OH]
Ve
L Titrant x molarity x stoichiometry / molarity