pH & pOH

Formulas for acidity and basicity.

pH Definition

pH = -\log[H^+]

pOH Definition

pOH = -\log[OH^-]

pH and pOH Relationship

At standard temperature (25°C).

pH + pOH = 14

Henderson-Hasselbalch Equation

pH = pK_a + \log \frac{[A^-]}{[HA]}

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