Calculadora de Ka Gratis
Calcula la constante de disociación ácida Ka. Mide la fuerza de un ácido débil en solución.
M
M
M
Ka
0.000167
pKa3.78
Ka vs [H+] at Equilibrium
Fórmula
## How to Calculate Ka ### Formula **Ka = [H+][A-] / [HA]** For the equilibrium: HA <-> H+ + A-
Ejemplo Resuelto
At equilibrium: [H+]=0.004, [A-]=0.004, [HA]=0.096 M.
- 01Ka = (0.004 × 0.004) / 0.096
- 02Ka = 0.000016 / 0.096
- 03Ka = 1.67 × 10^-4
- 04pKa = -log10(1.67 × 10^-4) = 3.78
Preguntas Frecuentes
What is Ka?
The acid dissociation constant measures the strength of a weak acid. Larger Ka means stronger acid (more dissociation).
What is pKa?
pKa = -log10(Ka). Lower pKa means stronger acid. It is more convenient for comparing acids.
Do strong acids have Ka values?
Strong acids fully dissociate, so their Ka is very large (effectively infinite). Ka is mainly used for weak acids.
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