And iii show location of the isoelectric point on the

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", and (iii) show location of the isoelectric point on the curve with "pI". N H OCH 3 OH HO O OH CH 3 CH 2 0.0 0.5 1.0 1.5 2.0 0 1 2 3 4 5 6 7 8 9 pH equivalents of added base (b) What is the value of the isoelectric point? (c) What is the structural equilibrium expected at pH = 5.0? minor form major form A. B. The sodarins are a class of antifungal agent that contain various glycosyl units, such as the one drawn below. Redraw this into its preferred chair form and answer the corresponding questions. O CH 3 OH H 3 CO HO OH Is this the or form? Is this derived from a D or L sugar? 12 2 6 6 2 2
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Name _______________________ Page 3 F.08.215e3p3 I I I . (26 points) A. In general, reaction rates for organic molecules that are somewhat water soluble are increased by adding increasing amounts of ethanol. However, some reactions are observed to actually slow down with added ethanol. For example, the following S N 2 reaction shows its f a s t e s t rate in pure water. Chemists believe that the hydrophobic effect is responsible for increasing the rate of the reaction. (a) Provide a brief explanation as to how the hydrophobic effect could influence the
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