# Question 70b52

The $\left(R\right)$ and (S#) system is used to assign the $\text{absolute configuration}$ of a chirality center. It bears no relation to if a compound will have a (+) optical rotation or a (-) optical rotation.
The optical rotation is determined experimentally using a polarimeter. Thus, a molecule could be $\left(R\right)$ and rotate in the (+) direction or in the (-) direction. Same goes for an $\left(S\right)$ stereocentered molecule.