Question

Here is the first posting withall the data and graphs, if there is anything you need to completethe quesitons--- please Private Message me! Thanks! I hope you willhelp me!!! I am so STUCK! I have been working on this for hours Idon't get it! =0(

Here is the link:

http://www.cramster.com/answers-jan-11/chemistry/darn-tit-160hello-working-lab-hours_1113872.aspx

1. Determine the Ka for aceticacid using the data from the titration of acetic acid withNaOh.

• Usethe midpoint and 3 other points before the equivalence point tocalculate the Ka.
• Createa table showing the volume of titrant, concentration of conjugatebase, concentration of weak acid, and Ka you used for yourcalculation.
• Include at least onesample calculation.

2. Determine the Kb forNH₃ using the data from the titration of NH₃with HCl.

• Usethe midpoint and 3 other points before the equivalence point tocalculate the Kb.
• Createa table showing the volume of titrant, concentration of conjugateacid, concentration of weak base, and Ka you used for yourcalculation
• Include at least onesample calculation.

PLEASE HELP!!