A weak monoprotic acid HA is examined under two conditions: • At pH = 3.00
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A weak monoprotic acid HA is examined under two conditions:
• At pH = 3.00, the solution is 95 % HA and 5 % A⁻.
• At pH = 6.00, the solution is 95 % A⁻ and 5 % HA.
Using only these data, estimate the pKa of HA to the nearest tenth.