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Calculations with Enantiomeric Percentages Solutions Library

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Calculations with Enantiomeric Percentages

Q. An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotat...

Solved • Jul 18, 2018

Calculations with Enantiomeric Percentages

Q. A mixture of a pair of enantiomers has 30% ee. The observed rotation of this mixture is +15º, and it is known by experiment that the (‐)‐enantiomer...

Solved • May 26, 2017

Calculations with Enantiomeric Percentages

Q. Given that (S)-2-butanol has a specific rotation of +13.52 o and (R)-2-butanol has a specific rotation of -13.52o, what is % composition of a mixtu...

Solved • May 5, 2017

Calculations with Enantiomeric Percentages

Q. The specific rotation of a pure substance is -5.90°. What is the percentage of this isomer in a mixture with an observed specific rotation of -2.95...

Solved • Mar 2, 2017

Calculations with Enantiomeric Percentages

Q. If the ee of a certain mixture with two enantiomers is 80%. What is the ratio of the two enantiomers in the mixture? a) 90:10 b) 80:20 c) 60:40 ...

Solved • Feb 17, 2017

Calculations with Enantiomeric Percentages

Q. The [α] of a pure chiral compound A is +30°, Calculate the ee of a solution with the value of -15°. What is the percentage of each enantiomer A and...

Solved • Sep 15, 2016

Calculations with Enantiomeric Percentages

Q. The [α] of pure S-normetanephrine is +20°. Calculate the ee of a solution with the following observed values. For each ee calculate the percent of ...

Solved • Sep 15, 2016

Calculations with Enantiomeric Percentages

Q. The specific rotation of (S)-carvone (at 20°C) is +61. A chemist prepared a mixture of (R)-carvone and its enantiomer, and this mixture had an obse...

Solved • May 31, 2016