Take-Home Quiz 3 (PDF)
Take-Home Quiz 3 (PDF)
Take-Home Quiz 3 (PDF)
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
CHEM 55 Quantitative Analysis Page 1 of 3<br />
Fall 2003<br />
Lecture <strong>Quiz</strong> 3: Chapters 12 and 14<br />
Name __________________________<br />
Please show all work for credit.<br />
This is an individual exercise, please do not collaborate on this.<br />
1. Calculate the pH of a solution that is 0.0400 M:<br />
a. H 3 PO 4<br />
b. NaH 2 PO 4<br />
2. Calculate the pH at the endpoint of a titration of 0.050M potassium hydrogen<br />
phthalate (KHP) with 1.00 M sodium hydroxide.
CHEM 55 Quantitative Analysis Page 2 of 3<br />
Fall 2003<br />
Lecture <strong>Quiz</strong> 3: Chapters 12 and 14<br />
3. Explain why phenolphthalein is a good indicator for KHP, but bromocresol purple is<br />
not. (All the information needed to solve this is in chapter 12 and appendix G).<br />
4. Briefly define:<br />
4.1. Oxidation<br />
4.2. Oxidizing agent
CHEM 55 Quantitative Analysis Page 3 of 3<br />
Fall 2003<br />
Lecture <strong>Quiz</strong> 3: Chapters 12 and 14<br />
5. Write the Nernst equation and calculate E o , ∆G o , and K EQ for the following reaction:<br />
2H + + Cr 2 O 7 2- + 3U 4+ 2Cr 3+ + 3UO 2 2+ + H 2 O<br />
See appendix H for relevant information.
Change language