CHEM 2301 Final: CHEM 2300 Final Exam Winter 2005
Document Summary
Ensure that this examination paper is complete, i. e. that all pages are present. Failure to submit the paper in its entirety at the end of the examination will normally result in disqualification. A periodic table and physical constants are provided. These are on the last sheet of the paper and may be detached for use during the examination. Should you require more space, use the back of the previous page and indicate clearly where this has been done. When answering questions, show all relevant calculations and justify all simplifying assumptions. Numerical answers should be reported to the appropriate number of significant digits with the correct units (if any). Do not write in the enclosed area below. Phosphoric acid, h3po4(aq), is a triprotic acid with the ka and pka values. 4. 4 x 10-13 pka1 (298 k) = pka2 (298 k) = pka3 (298 k) = You are provided with 0. 20 mol l 1 solutions of each of nah2po4(aq),
