PKB
PKB is a three-letter abbreviation that may refer to:
Acid dissociation constant
An acid dissociation constant, 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. In aqueous solution, the equilibrium of acid dissociation can be written symbolically as:
where HA is a generic acid that dissociates into A−, known as the conjugate base of the acid and a hydrogen ion which combines with a water molecule to make an hydronium ion. In the example shown in the figure, HA represents acetic acid, and A− represents the acetate ion, the conjugate base.
The chemical species HA, A− and H3O+ are said to be in equilibrium when their concentrations do not change with the passing of time. The dissociation constant is usually written as a quotient of the equilibrium concentrations (in mol/L), denoted by [HA], [A−] and [H3O+]
In all but the most concentrated aqueous solutions of an acid the concentration of water can be taken as constant and can be ignored. The definition can then be written more simply
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Still Uneasy
by: PegboyThe other day I said to you
I know what you want to do
I could never sit around
While you´re feeling down
And I could never compromise
My situation lies
And I would never feel the same
Would you be the blame?
Would you leave me
Still uneasy
Locked inside of
Torn in spite of
I don´t want to, I don´t want to know
Sometimes when you´re all alone
Hiding what you´re thinking of
I could never sit around
While you´re feeling down
I could never see my self
Chasing something else
I would never get away
Would you feel the same?
Would you leave me
Still uneasy
Trapped inside of
Torn in spite of
I don´t want to, I don´t want to know
Sometimes when I´m all alone
Feeling what you´re thinking of
And I could never sit around
Chained to frozen ground
I could never see my self
Playing for something else
And I could never walk away
Would you feel the same?
Would you leave me
Still uneasy
Trapped inside of
Torn in spite of