Consider all possible isomeric ketones, including stereoisomers of MW=100. all these isomers are independently reacted with NaBH_(4) (NOTE: stereoisomers are also reacted). The total number of ketones that give a racemic product(s) is/are

Consider all possible isomeric ketones, including stereoisomers of MW=

1.	Consider all possible isomeric ketones, including stereoisomers of MW=100. all these isomers are independently reacted with NaBH_(4) (NOTE: stereoisomers are also reacted). The total number of ketones that give a racemic product(s) is/are
Answer» Solution :General formula of ketones`=C_(n)H_(2n)O` MW of the ketone=100 `therefore12xxn+1xx2n+1xx16=100` or `14n=84` or `n=6` `therefore`M.F. of the ketone=`C_(6)H_(12)O`. The TOTAL number of isomeric ketones having the M.F. `C_(6)H_(12)O_(6)` is Whenever a new chiral centre is created by reaction of achiral COMPOUNDS with achiral reagents, a racemic MIXTURE of products is always produced. but chiral compounds under these conditions will product diastereomeric OPTICALLY active products. since there are five achiral ketones, therefore, on reduction with `NaBH_(4)` will produce five racemic mixture of products.