please help! also what is the relationship between pH and Ka?
2007-03-15 06:13:02 · 2 answers · asked by malasunas 3 in Science & Mathematics ➔ Chemistry
pOh is the negative log of hydroxide concentration. 14 - pOH is pH. Ka is the acid dissociation constant which with a starting concentration of acid, enables you to determine the concentration of hydronium (hydrogen ion) at equilibrium. Equilibrium constants (K) are a ratio of product to reactant concentrations at equilibrium. With acids, Hydronium and the conjugate base of the acid are products and your acid is the reactant.
2007-03-15 06:23:46 · answer #1 · answered by chemmie 4 · 3⤊ 0⤋
More information: In buffer solutions calculations we find the Henderson-Hasselbach relationship between pH and pKa:
pH = pKa + log [Acid] / (Conjugate Base]
Hence:
pOH = 14 - pKa - log [Acid] / [Conjugate Base]
being [ ] = concentration
2007-03-15 06:28:50 · answer #2 · answered by CHESSLARUS 7 · 2⤊ 0⤋