pH calculations

pH and the hydrogen ion concentration are related by the equation pH = -log₁₀[H⁺].

Water molecules dissociate into hydrogen and hydroxide ions in solution. The ionic product of water describes the relationship between the two at equilibirum.

In solution, strong acids/bases completely dissociate into ions, but weak acids/bases only partially dissociate. The acid dissociation constant is Ka and is related to pKa by the expression pKa = -log₁₀Ka. The pH of a weak acid can be calculated by pH = 1/2 pKa - 1/2 log₁₀c.

A buffer solution maintains a constant pH when small volumes of acid or base are added. The pH of a buffer solution can be calculated by the equation pH = pKa - log₁₀[acid]/[salt].

#0

Loading ...

#0

Loading ...

Image.png

Have you found the questions useful?

Sign up to access 50% more of them for free πŸ˜€

StudySquare