100 mL of 0.06 M TRIS hydrochloride (C₂H, NO, HCI) is titrated with1.0 M sodium hydroxide (NaOH). The titration curve is shown.What is the approximate pK, ?pk =Hd14121086420At the pK,, what fraction of the amine group will have been converted to NH; ?Express your answer as a decimal, not a percent.05410 15 20Volume of base (mL)2530

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100 mL of 0.06 M TRIS hydrochloride (C,H, NO, HCI) is titrated with 1.0 M sodium hydroxide (NaOH). The titration curve is shown. What is the approximate pK, ? pk, = Hd 14 12 10 8 642O 0 At the pK,, what fraction of the amine group will have been converted to NH; ? Express your answer as a decimal, not a percent. 0 5 10 15 20 Volume of base (mL) 25

100 mL of 0.06 M TRIS hydrochloride (C,H, NO, HCI) is titrated with 1.0 M sodium hydroxide (NaOH). The titration curve is shown. What is the approximate pK, ? pk, = Hd 14 12 10 8 642O 0 At the pK,, what fraction of the amine group will have been converted to NH; ? Express your answer as a decimal, not a percent. 0 5 10 15 20 Volume of base (mL) 25

Chemistry

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ISBN:9781305957404

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

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

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

100 mL of 0.06 M TRIS hydrochloride (C₂H, NO, HCI) is titrated with
1.0 M sodium hydroxide (NaOH). The titration curve is shown.
What is the approximate pK, ?
pk =
Hd
14
12
10
8
6
42
0
At the pK,, what fraction of the amine group will have been converted to NH; ?
Express your answer as a decimal, not a percent.
0
5
4
10 15 20
Volume of base (mL)
25
30

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presented by Macmillan Learning Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-3, K = 6.2 x 10-8, and K3 = 4.8 x 10-13). To find the pH of a buffer composed of H, PO, (aq) and HPO? (aq), which pK, value should be used in the Henderson-Hasselbalch equation? O pKal = 2.16 %3D O PK22 =7.21 O pK33 = 12.32 Calculate the pH of a buffer solution obtained by dissolving 10.0 g of KH, PO, (s) and 25.0 g of Na, HPO,(s) in water and then diluting to 1.00 L. = Hd Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry Publisher: University Scier 7:13 PM 11/8/202 五 0 FZ F8 F10 F11 F12 PrtScr Insert Delete F4 F5 Backspace 23 7. 8. 3. 5. R. E D F H B. N W PgUp Alt Ctrl Home PgDn