Questions 17, 18, and 19 please How many isomeric dichlorocyclopropanes exist? H

Question

Questions 17, 18, and 19 please

How many isomeric dichlorocyclopropanes exist? Hint: sketch them, then count them. two three four five six How many stereoisomers does the molecule below have? three: R,R S,S and meso two: R and S four: R,R S,S S,R R,S only an R enantiomer this compound does not have any stereoisomers (R)-2-butanol shows a specific angle of rotation of -13.52 degree. What angle of rotation do you measure for a mixture of 2 grams of the R enantiomer and 2 grams of the S enantiomer of this compound in 10 mL methanol, placed in a 2 cm long cell? approx. +0.54 degree approx. -0.54 degree 0 degree approx. -2.6 degree impossible to tell, I'd have to measure it

Explanation / Answer

17. 6, as there will be stereocentre where R and S will also be counted 18. D, only an R enantiomer 19. 0, as the amt of R and S are equal and they will cancel each other then,

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