What are Dissociation Constants?
This post will be an introduction to dissociation constants for QCE Chemistry.
3.1.5 – Dissociation Constants
- Recognise that the strength of acids is explained by the degree of ionisation at
equilibrium in aqueous solution, which can be represented with chemical
equations and equilibrium constants (Ka)
- Determine the expression for the dissociation constant for weak acids (Ka)
and weak bases (Kb) from balanced chemical equations
- Use appropriate mathematical representation to solve problems, including
calculating dissociation constants (Ka and Kb) and the concentration of
reactants and products.
Ka, Kb, pKa and pKb
Ka and Kb are the dissociation constants for an acid or base respectively, while the pKa and pKa is the negative log of the Ka and Kb.
This video will go through them in a little more detail.
This video goes through acid-base equilibria which is what the dissociation constant is based off of.