A student titrates 25.0 mL of 0.100 M monoprotic weak acid HA ( ) with 0.100 M NaOH

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

Problem

A student titrates 25.0 mL of 0.100 M monoprotic weak acid HA (

K_a = 1.8 \times 10^{-5}

) with 0.100 M NaOH. What is the pH of the solution exactly at the equivalence point? (a)

8.87

(b)

7.00

(c)

9.37

(d)

8.72