A chemist has 100 mL of 0.50 M lactic acid solution (pK_a = 3.86)

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

Problem

A chemist has 100 mL of 0.50 M lactic acid solution (pK_a = 3.86). What volume of 1.00 M NaOH must be added to adjust the solution to pH 4.06? (a)

27\text{ mL}

(b)

50\text{ mL}

(c)

31\text{ mL}

(d)

19\text{ mL}