4.A mixture has 3 times as much (S)-2-butanol as (R)-2-butanol. If the specificrotation of pure (R)-2-butanol is +13.5°, calculate the enantiomeric excess and thespecific rotation expected for this mixture.(+)-Tartaric acid has a specific rotation of +12.0°. Calculate the expected specificrotation of a mixture that is 72% (+)-tartaric acid & 28% (-)-tartaric acid.5.The specific rotation of (S)-2-iodobutane is +15.90°. Calculate the % composition ofa mixture of (R) & (S)-iodobutane with specific rotation of-2.00°.6. Clearly show all calculations:The (-) enantiomer of a compound has a specific rotation of [a] = 123°. What rotation, a,will be observed for a sample of this pure enantiomer at concentration of 0.25 g/mL,when measured in a polarimeter in a 2 dm sample tube?1.2. The specific rotation of pure (+) 2-octanol is +10° g' mL dm". A sample containing bothenantiomers is found to have an apparent specific rotation of +4.0° g' mL' dm". What is theoptical purity of the sample? Calculate the percent of the (+) and (-) 2-octanol in the sample.-13. The specific rotation of pure (-) cholesterol is -39° g' mL' dm'. What is the apparentspecific rotation of a sample containing 90% of the (-) enantiomer and 10% of the (+)enantiomer?

The question is based on the concept of stereochemistry and optical rotation. we have to calculate…

A mixture has 3 times as much (S)-2-butanol as (R)-2-butanol. If the specific rotation of pure (R)-2-butanol is +13.5°, calculate the enantiomeric excess and the specific rotation expected for this mixture. 4.

A mixture has 3 times as much (S)-2-butanol as (R)-2-butanol. If the specific rotation of pure (R)-2-butanol is +13.5°, calculate the enantiomeric excess and the specific rotation expected for this mixture. 4.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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