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A student titrated a 50.0 mL of 0.21 M glycolic acid with 1.0 M NaOH. The end point volume was 50.0 mL. What is the pH at the equivalence points? Ka of glycolic acid is 1.5 x 10⁻⁴.
a. 8.96 b. 11.6 c. 10.2 d. 9.54 e. 8.42
Sagot :
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