Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Ans. Identical.

Sol. Both Fischer projections are HOOC-CHBr-CH(OH)-CN. At the CHBr centre (priorities Br $>$ COOH $>$ CH(OH)CN $>$ H) both projections give R; at the CH(OH)(CN) centre (priorities OH $>$ CH(Br)COOH $>$ CN $>$ H) both give S. Same configuration at both centres : identical.