weak base titration - 2.01E-11 4.98E-02 0.00E+00 50.5 3.30...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
58885180d2c6d047868be702105c799d27a2feec.xls Page 1 pKb pKa 5.00 9.00 conc B vol B mmol B conc H+ Kb Ka Kw endpoint 0.1 50 5 0.1 1.00E-05 0 1.00E-14 50 mmol B mmol BHcombined equil equil pre-equil pre-equil mL H+ % titrated left made total ml [H+] [OH-] [BH+] [B] added pH this is for the pH=7 line for reference 0.00% 5 0 50 1.01E-11 9.95E-04 0.00E+00 1.00E-01 0 11.00 0 7 10.00% 4.5 0.5 55 1.12E-10 8.90E-05 9.09E-03 8.18E-02 5 9.95 100 7 25.00% 3.75 1.25 62.5 3.34E-10 2.99E-05 2.00E-02 6.00E-02 12.5 9.48 50.00% 2.5 2.5 75 1.00E-09 9.99E-06 3.33E-02 3.33E-02 25 9.00 75.00% 1.25 3.75 87.5 3.00E-09 3.33E-06 4.29E-02 1.43E-02 37.5 8.52 90.00% 0.5 4.5 95 9.00E-09 1.11E-06 4.74E-02 5.26E-03 45 8.05 99.00% 0.05 4.95 99.5 9.90E-08 1.01E-07 4.97E-02 5.03E-04 49.5 7.00 99.75% 0.01 4.99 99.88 3.98E-07 2.51E-08 4.99E-02 1.25E-04 49.88 6.40 100.00% 0 5 100 7.07E-06 1.41E-09 5.00E-02 0.00E+00 50 5.15 100.25% -0.01 5 100.13 1.25E-04 7.98E-11 4.99E-02 0.00E+00 50.13 3.90 101.00% -0.05 5 100.5 4.98E-04
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2.01E-11 4.98E-02 0.00E+00 50.5 3.30 110.00%-0.5 5 105 4.76E-03 2.10E-12 4.76E-02 0.00E+00 55 2.32 150.00%-2.5 5 125 2.00E-02 5.00E-13 4.00E-02 0.00E+00 75 1.70 200.00%-5 5 150 3.33E-02 3.00E-13 3.33E-02 0.00E+00 100 1.48 20 40 60 80 100 120 2 4 6 8 10 12 Column N Column K 5.15 9.00 Note: You can change the boldface blue values above to modify the pH curve. Note that there are limits to the way this spreadsheet solves. K a should be between 10-2 and 10-10 in size. The concentrations need to be of reasonable size also. Note also that the pH at the equivalence point (100%) and the halfway point (50%) are highlighted in color. Note how the pH at the halfway point is equal to pKa for the conjugate acid....
View Full Document

This note was uploaded on 11/02/2008 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

Ask a homework question - tutors are online