Koofer (4) - 1 of 2 BIS 102 Name Summer 2009 Last First K...

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Unformatted text preview: 1 of 2 BIS 102 Name _____________________________________________ Summer, 2009 Last First K. Hilt Final Exam Score (200): ___________ Equations: pH = pK a + log {[b]/[a]} K a = x 2 /(y-x) K b = x 2 / (y-x) pH = (pK a 1 + pK a 2 )/2 (K a )(K b ) = 1 x 10-14 F = (q 1 q 2 ) / r 2 G = H - T S v o = {V max [S]}/ {K m + [S]} Amino acid pK a ’s: -carboxyl group (2.1), -amino group (9.6) side chains: D (3.9) E (4.2) H (6.0) C (8.3) Y (10.1) K (10.5) R (12.5) Oligopeptide pK a ’s: C-terminal carboxyl group (3.6), N-terminal amino group (7.4) 1. (25 pts.) How many moles of HCl are required to change the pH of 300 ml of 0.200 M histidine buffer, pH 9.8 to a final pH of 2.6? Assume that addition of HCl does not change the volume. Put your answer here: _________ mols HCl. To receive credit, show all of your work on the back of this page. 2. (25 pts.) Crystals of deoxy Mb are stored in a N 2(g) atmosphere. If O 2(g) is added, nothing happens to the crystals....
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Koofer (4) - 1 of 2 BIS 102 Name Summer 2009 Last First K...

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