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Science · Chemistry
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10.32. When 5.00 ml. of 0.103 2 M NaOH were added to 0.112 3 g of alanine (FM 89.093) in 100.0 mL of 0.10 M KNO3, the meas- ured pH was 9.57. Use activity coefficients to find pK2 for alanine. Consider the ionic strength of the solution to be 0.10 M and consider each ionic form of alanine to have an activity coeffi- cient of 0.77.

Answer is pK2=9.84

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