Two separate solutions of hydrofluoric acid are prepared at
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
Problem
Two separate solutions of hydrofluoric acid are prepared at 25∘C. Solution I is 0.10M HF, and Solution II is 0.010M HF. Which statement correctly compares their percent ionizations?
(a) Solution I has the greater percent ionization because it contains more acid molecules.
(b) Solution II has the greater percent ionization because dilution increases the fraction of molecules that ionize.
(c) Both solutions have the same percent ionization because Ka is constant at a given temperature.
(d) Solution II is exactly ten times more ionized than Solution I because its concentration is ten times lower.