1.

Which of the folloiwng statements is true?

Answer»

When an chiral MOLECULE reacts to given a chiral molecule the product is always recemic.
In chemical reactions the change from an`(S)` reactant to an `(R)` product always signals an INVERSION of configuration
An optically inavtice substance must be achiral
An achiral COMPOUND can have chiral centers

Solution :An example of an achiral compound with chiral centers is a meso compound
(1) False because if an optically active chiral co-reactant, solvent or catayst such as an enzyme is used, the product will likely be optically active
(2) False because the priority sequence of LIGANDS may change
(3) False beacuse a racemate shows no optical activity
(4) False beacuse the sign of rotation is not related to the configuration.


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