A 0.130 M solution of an enantiomerically pure chiral compound D has an observed
ID: 938426 • Letter: A
Question
A 0.130 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.12 in a 1-dm sample container. the molar mass of the compound is 168.0 g/mol. What is the specific rotation of D? What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.130 M in L, the enantiomer of D? What is the observed rotation if the solution of D is diluted with an equal volume of solvent? What is the specific rotation of D after the dilution described in part(c) ? what is the specific rotation of L. the enantiomer of D, after the dilution described in part(c)? What is the observed rotation of 100 mL of a solution that contains 0.01 mole of D and 0.005 mole of L? (Assume a 1-dm path length.)Explanation / Answer
f)
answer : 0.0461
(0.005 / 100) x 168 = 0.0084
observed rotation = 5.49 x 0.0084 x 1 = 0.0461
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