How could a liquid have a rotation power while the dextrogyre or levogyre molecules are randomly organised in the liquid?

Asked Aug 13 '20 at 07:31

Active Aug 13 '20 at 10:02

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Let's consider a liquid that contains either dextrogyre or levogyre molecules, but only a highly preponderance of one of them.

Since the molecules are randomly oriented in the liquid, how is it possible to have a net rotation power of the liquid since the various angular orientations of the molecules should cancel out the effect of the light rotation ?

edited Aug 13 '20 at 10:02

asked Aug 13 '20 at 07:31

Mathieu Krisztian

Assuming you mean "only one sort" (and even a preponderance of one) you might look here https://chemistry.stackexchange.com/q/6271/48509 and here https://physics.stackexchange.com/questions/15503/how-do-optically-active-compounds-rotate-plane-polarized-light – Alchimista Aug 13 '20 at 09:43
@Alchimista : thank you very much. Yes I was meaning only one sort of them (I'm not fluent in english). Thank you. I will look at your very useful links. – Mathieu Krisztian Aug 13 '20 at 10:03

How could a liquid have a rotation power while the dextrogyre or levogyre molecules are *randomly* organised in the liquid?

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How could a liquid have a rotation power while the dextrogyre or levogyre molecules are randomly organised in the liquid?