A. Arrange the following in order of their increasing SN2reactivity with NaCN: bromoethane,1-chloro-3,3-dimethylpentane,1-clpro-2,2-dimethylpentane and2-bromo-2-methylpentane.
B. Determine the e. e. of a mixture which is having 8.0g of (-)-glyceraldehyde and 2.0g of (+)-glyceraldehydes.