Measurement of the pk, of an unknown acid by the half-neutralization method0.1037Concentration of standardized NaOH titrantmol/LTrial 1Trial 2Mass of unknown acid solution30.0130.00Volume of NaOH added to half-neutralizethe unknown acid14.6814.68ml.mlMeasured pH of half-neutralized solution4.924.74Average pH valuepk, -Calculate the (H,0') and the concentration of A and HA, in the half-neutralized solution.K-(Note: In this solution, (H,0'1 (A 1)MH,0MAM HA

Half neutralization is the point on which the concentration of weak acid is equal to the…

Answered: 0.1037 Concentration of standardized…

0.1037 Concentration of standardized NaOH titrant mol Trial Mass of unknown acid solution 30.0 Volume of NaOH added to half-neutralize the unknown acid 14.6

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 130CP: Malonic acid (HO2CCH2CO2H) is a diprotic acid. In the titration of malonic acid w ith NaOH,...

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Measurement of the pk, of an unknown acid by the half-neutralization method
0.1037
Concentration of standardized NaOH titrant
mol/L
Trial 1
Trial 2
Mass of unknown acid solution
30.01
30.00
Volume of NaOH added to half-neutralize
the unknown acid
14.68
14.68
ml.
ml
Measured pH of half-neutralized solution
4.92
4.74
Average pH value
pk, -
Calculate the (H,0') and the concentration of A and HA, in the half-neutralized solution.
K-
(Note: In this solution, (H,0'1 (A 1)
MH,0
MA
M HA

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