Ka

[Briana Lopez 4K]

What does Ka represent and why is it significant?

[Jessica Urzua-1H]

Ka is an acid dissociation constant that is a quantitative measure of the strength of an acid in solution.

[Kate Manganaro 1F]

Hello,
Ka is essentially a measure of how strong an acid is in a solution. It is equal to ([A-][H+])/[AH].
Hope this helps!

[Jada Larson 1F]

K_a is the ratio of the forward reaction to the backward reaction. It is important because for weak acids, compounds only partially dissociate into H+ ions, and there is a reverse reaction with the equilibrium constant, k.

HA <--> H⁺ + A^-

k_a = [H⁺][A^-]/[HA]

[Nimrat Brar 1E]

Ka (also known as acidity constant, or acid-ionization constant) is a quantitative measure of the strength of an acid in solution. It is the equilibrium constant for a chemical reaction known as dissociation in the context of acid–base reactions.

[John Miller-1I]

It is a constant that measures how strongly the acid dissociates, meaning how easily it donates a proton.