a.) A mixture of structures II and IV has a 12% excess of structure II. How much of structure II is in the mixture? (b) A mixture of structures II and IV has a 28% excess of structure II. How much of structure IV is in the mixture? (c)) Determine the optical purity of a mixture containing 40% structure I and 60% structure III. (d) A mixture of structures I and III gives an observed rotation of +13.6 o. If the specific rotation of a pure sample of structure I is +31.3 o, what is the optical purity of the mixture? (e) A pure sample of structure IV has a specific rotation of +16.1 o. If the ee of a mixture of structures II and IV is 25.0 %, what is the observed rotation
Refer to the list of compounds shown below when answering questions 5(a) to 5(e). Assume that the temperature (20 oC) is the same for all compounds.
a.) A mixture of structures II and IV has a 12% excess of structure II. How much of structure II is in the mixture?
(b) A mixture of structures II and IV has a 28% excess of structure II. How much of structure IV is in the mixture?
(c)) Determine the optical purity of a mixture containing 40% structure I and 60% structure III.
(d) A mixture of structures I and III gives an observed rotation of +13.6
o. If the specific rotation of a pure sample of structure I is +31.3 o, what is the optical purity of the mixture?
(e) A pure sample of structure IV has a specific rotation of +16.1
o. If the ee of a mixture of structures II and IV is 25.0 %, what is the observed rotation (α) of the solution?
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