A student assumes that the change in concentration ( ) is negligible when finding the…
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A student assumes that the change in concentration (x) is negligible when finding the pH of a 0.15 M aqueous solution of a weak base with Kb=1.8×10−5 at 25 °C. Calculate the percent ionization to justify whether this small-x approximation is valid.