Which expression gives the percent ionization of a monoprotic weak acid that has an…

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

Which expression gives the percent ionization of a monoprotic weak acid

HA

that has an initial molar concentration

[HA]_0

and reaches the equilibrium concentrations

[HA]_{eq}

and

[H_3O^+]_{eq}

? (a)

\sqrt{\dfrac{K_a}{[HA]_0}}\times 100\%

(b)

\dfrac{[H_3O^+]_{eq}}{[HA]_0}\times 100\%

(c)

\dfrac{[H_3O^+]_{eq}}{[HA]_{eq}}\times 100\%

(d)

\dfrac{[HA]_{eq}}{[HA]_0}\times 100\%