What is a racemic mixture? Give an example

Explanation

A 50:50 mixture of two enantiomers of any optically active compound is called a racemic mixture. It is always optically inactive since rotation caused by the molecules of one enantiomer is exactly cancelled by equal and opposite rotation caused by the molecules of the other enantiomers. for example, an equimolar mixture of (+)-2-bromobutane and (-)-2-bromobutane is called a racemix mixture.