
Concept explainers
(a)
Interpretation:
Whether cholesterol is dextrorotatory or levorotatory needs to be identified.
Concept introduction:
A compound is dextrorotatory if it rotates the plane polarize light to the right or clockwise direction and it is levorotatory if the plane of polarize light rotates to left or anticlockwise.
(b)
Interpretation:
The specific rotation of the enantiomer of cholesterol needs to be determined.
Concept introduction:
Enantiomers are a part of stereoisomers. In chemistry, enantiomers are two stereoisomers that are mirror images of each other. Usually in a pair of enantiomers of a same compound one is dextrorotatory, while the other is levorotatory. As enantiomers have chiral centers, they are optical isomers.

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Chapter 15 Solutions
Loose Leaf for General, Organic and Biological Chemistry with Connect 2 Year Access Card
- What is the organic molecule X of the following acetal hydrolysis? Please draw a skeletal line structure and include a detailed explanation and drawing of how the mechanism proceeds. Please include any relevant information that is needed to understand the process of acetal hydrolysis.arrow_forwardWhat are is the organic molecule X and product Y of the following acetal hydrolysis? Please draw a skeletal line structure and include a detailed explanation and drawing of how the mechanism proceeds. Please include any relevant information that is needed to understand the process of acetal hydrolysis.arrow_forwardAt 300 K, in the decomposition reaction of a reactant R into products, several measurements of the concentration of R over time have been made (see table). Without using graphs, calculate the order of the reaction. t/s [R]/(mol L-1) 0 0,5 171 0,16 720 0,05 1400 0,027arrow_forward
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- How many grams of solid NaCN have to be added to 1.5L of water to dissolve 0.18 mol of Fe(OH)3 in the form Fe(CN)63 - ? ( For simplicity, ignore the reaction of CN - ion with water) Ksp for Fe(OH)3 is 2.8E -39, and Kform for Fe(CN)63 - is 1.0E31arrow_forwardDraw the most stable chair conformation of 1-ethyl-1-methylcyclohexane, clearly showing the axial and equatorial substituents. [4] Draw structures corresponding to the following IUPAC name for each of the following compounds; [5] i) 4-Isopropyl-2,4,5-trimethylheptane ii) trans-1-tert-butyl-4-ethylcyclohexane iii) Cyclobutylcycloheptane iv) cis-1,4-di-isopropylcyclohexane (chair conformation) v) 3-Ethyl-5-isobutylnonanearrow_forwardDraw and name molecules that meet the following descriptions; [4] a) An organic molecule containing 2 sp2 hybridised carbon and 1 sp-hybridised carbon atom. b) A cycloalkene, C7H12, with a tetrasubstituted double bond. Also answer question 2 from the imagearrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,
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