A student titrates 25.00 mL of HCl with 0.100 M NaOH using phenolphthalein
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A student titrates 25.00 mL of HCl with 0.100 M NaOH using phenolphthalein, which changes color only after a slight excess of base is present. If the student stops the titration at the color change and uses that volume to compute the molarity of HCl, will the reported molarity be higher than, lower than, or equal to the true value? Briefly justify your answer.