Solve the following problems using the systematic approach to equilibrium problems.
1. Determine the concentration of Ag+, CN-, and HCN in a saturated solution of AgCN where the pH is fixed at 5.90.
2. Determine the concentration of NH4+, NH3, CH3COOH (acetic acid), and CH3COO- (acetate ion) if 0.0050 moles of ammonium acetate (NH4+ -OOCCH3) is dissolved in 1.00 L of water and the pH is fixed at 5.90.
3. Calculate the pH of 5.0 x 10-8 M HCl. You will need to use the systematic treatment of equilibrium, and there are no simplifying assumptions you can make. Approximately what fraction of the total H+ in this solution is due to the autoprotolysis of water?
4. Write chemical reactions for the following:
a. Ka for 3-nitrobenzoic acid
b. Kb for 3-nitrobenzoate
c. Kb for benzylamine
d. Ka for benzylammonium ion
5. Calculate the pH and fraction of dissociation for a 0.10 M solution of formic acid.
6. Calculate the pH and fraction of association for a 0.10 M solution of sodium formate.
7. Calculate the pH and fraction of dissociation for a 0.050 M solution of ethanolamine (2-amino ethanol).
With this solution, you will have to do some of the calulations yourself. Web links are provided for the acids and bases. Problem 1 and 2 are set up in a lot of depth, merely do not include final calculations (a calculator will be needed). Included is a detailed explanation of solubility product constant calculations and acid dissociation calculations. Steps for each of the problems are identified. 695 words.
Limitations of Medication
In discussing anxiety disorder treatments, can you hypothesize why medication is not as successful when treating these disorders as opposed to psychotherapy?View Full Posting Details