
Concept explainers
(a)
Interpretation:
Whether lactose is dextrorotatory or levorotatory compound should be determined.
Concept Introduction:
Chiral or optically active molecules can rotate plane-polarized light either clockwise or counter clockwise. If plane-polarized light is rotated clockwise then it is known as dextrorotatory and for counter clockwise rotation it is known as levorotatory.
(b)
Interpretation:
Specific rotation of the enantiomer of lactose should be determined.
Concept Introduction:
Enantiomers rotate the plane-polarized light in opposite directions by same angle.
(c)
Interpretation:
The amount of lactose enantiomer dissolved in water should be determined.
Concept Introduction:
Physical properties of enantiomers are similar except the direction of optical activity. Solubility, melting point, boiling points are similar.

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Chapter 15 Solutions
General, Organic, & Biological Chemistry
- In the decomposition reaction in solution B → C, only species C absorbs UV radiation, but neither B nor the solvent absorbs. If we call At the absorbance measured at any time, A0 the absorbance at the beginning of the reaction, and A∞ the absorbance at the end of the reaction, which of the expressions is valid? We assume that Beer's law is fulfilled.arrow_forward> You are trying to decide if there is a single reagent you can add that will make the following synthesis possible without any other major side products: 1. ☑ CI 2. H3O+ O Draw the missing reagent X you think will make this synthesis work in the drawing area below. If there is no reagent that will make your desired product in good yield or without complications, just check the box under the drawing area and leave it blank. Click and drag to start drawing a structure. Explanation Check ? DO 18 Ar B © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibilityarrow_forwardDon't use ai to answer I will report you answerarrow_forward
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- 7 Draw the starting alkyl bromide that would produce this alkyne under these conditions. F Drawing 1. NaNH2, A 2. H3O+ £ 4 Temps to rise Tomorrow Q Search H2arrow_forward7 Comment on the general features of the predicted (extremely simplified) ¹H- NMR spectrum of lycopene that is provided below. 00 6 57 PPM 3 2 1 0arrow_forwardIndicate the compound formula: dimethyl iodide (propyl) sulfonium.arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning

