Question

predict the specific rotation of the compound shown.
zero; the compound is achiral.
it is impossible to predict; it must be determined experimentally.
because both asymmetric centers are r, the compound is dextrorotatory.
because this compound represents a racemic mixture, the compound is dextrorotatory.
because both asymmetric centers are s, the compound is levorotatory.

Explanation:

Step1: Identify chiral centers

The given compound has no chiral centers as it has a plane of symmetry. A compound with a plane of symmetry is achiral.

Step2: Recall property of achiral compounds

Achiral compounds do not rotate plane - polarized light. So, their specific rotation is zero.

Answer:

A. Zero; the compound is achiral.