SHOW ALL WORK!!! Consider the compounds 1, 2, and 3. CO 2H CO 2H CO2H HO H HO OH
ID: 982836 • Letter: S
Question
SHOW ALL WORK!!!
Consider the compounds 1, 2, and 3. CO 2H CO 2H CO2H HO H HO OH OH HO CO 2H CO 2H CO 2H Given below are some physical properties of pure 1. Melting point 173 "C 12.7 (water density (at 25 aC) 1.7598 g cm solubility 139 g/100 mL ater Determine which of the following statements is/are correct. l. A mixture of 1 and 3 at 1:1 molar ratio has an [o]25D of zero in water l. The density of pure 2 is 1.7598 g cm at 25 C. ll. The solubility of pure 3 is not 139 g/100 mL water. O only O land ll only O and Ill only O ll only O I, II, and IllExplanation / Answer
Answer I and II only are correct
Reason
Compound 1 and compound 3 are enantiomers,while compound 1 and 2 and compound 3 and 2 are diastereomers.
1 ) Enantiomers (1 and 3)rotate plane-polarized light by equal amounts but in opposite directions, so has net zero rotation.The positive rotation counteracts the negative rotation so specific rotation is zero
2) Density =mass per unit volume of solids depends on molecular size .As molecules are tightly packed.Diastereomers has equally sized molecules so 1 and 2 have same density.
3)Enantiomers have same solubility due to similar structures and hence similar orientation while forming hydrogen-bonding with water
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