# equation

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## equation

[e-kwa´zhun]
an expression of equality between two parts.
Henderson-Hasselbalch equation a formula for calculating the pH of a buffer solution such as blood plasma, pH = pKa + log [BA/HA]; [HA] is the concentration of a free weak acid; [BA] the concentration of the ionized form of this acid; pKa the acid dissociation constant, a measure of the ionization equilibrium of the acid.

## e·qua·tion

(ē-kwā'zhŭn),
A statement expressing the equality of two things, usually with the use of mathematical or chemical symbols.
[L. aequare, to make equal]

## equation

/equa·tion/ (e-kwa´zhun) an expression of equality between two parts.
Henderson-Hasselbalch equation  a formula for calculating the pH of a buffer solution such as blood plasma.

## equation

Etymology: L, aequare, to make equal
an expression in symbols of equality or equivalence.

## e·qua·tion

(ĕ-kwā'zhŭn)
A statement expressing the equality of two things, usually by means of mathematical or chemical symbols.
[L. aequo, to make equal]

## e·qua·tion

(ĕ-kwā'zhŭn)
A statement expressing the equality of two things, usually with the use of mathematical or chemical symbols.
[L. aequare, to make equal]