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BIS102 Hilt SSII03 FINAL -no answers

# BIS102 Hilt SSII03 FINAL -no answers - 1 of 4 BIS 102...

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BIS 102 Name _________________________________________ Summer Session II Last First K. Hilt Final Score (134): ____________ Equations: pH = pKa + log {[b]/[a]} G = H - T S v o = {V max [S]} / {K m + [S]} F = (q 1 q 2 )/( ε r 2 ) 1. ( 10 pts.) Draw the structure of a phosphatidylserine molecule that contains one saturated fatty acid and one unsaturated fatty acid. Draw this molecule in the form that would predominate at pH 7. 2. ( 12 pts.) What is the final pH when 4.00 ml of 50 mM Tris, pH 8.21, is mixed with 1.00 ml of 50 mM HCl? The pK a of Tris is 8.21. Show all calculations. 3. ( 5 pts.) Derive the steady state rate expression for K m . Recall that this expression has the rate constants k 1 , k 2 , and k -1 . Show how you derived this expression. 4. ( 5 pts.) The pK a of acetic acid in water is 4.76. Would the pK a of acetic acid be higher, lower, or the same if the acetic acid was in a solution of 50% ethanol/50% water, rather than pure water? Explain.

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BIS102 Hilt SSII03 FINAL -no answers - 1 of 4 BIS 102...

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