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10 cards from this deck
KaK_aKa
Ka=[H3O+][A−][HA]K_a = \frac{[\text{H}_3\text{O}^+][\text{A}^-]}{[\text{HA}]}Ka=[HA][H3O+][A−]
Solvent, concentration remains constant
Strong acids that ionise almost completely
Weak acids that only ionise to small extent
Ka=[H3O+]2[HA]K_a = \frac{[\text{H}_3\text{O}^+]^2}{[\text{HA}]}Ka=[HA][H3O+]2
[H3O+][HA]init×100%\frac{[\text{H}_3\text{O}^+]}{[\text{HA}]_{\text{init}}} \times 100\%[HA]init[H3O+]×100%
Acids that can donate more than one proton
Ka1>Ka2>Ka3K_{a1} > K_{a2} > K_{a3}Ka1>Ka2>Ka3 (first proton easiest to remove)
pKa=−log10Ka\text{p}K_a = -\log_{10} K_apKa=−log10Ka
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