Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Ans. Identical.

Sol. Both are (E)-pent-3-en-2-ol, CH₃-CH=CH-CH(OH)-CH₃, with the same C=C geometry (the CH₃ and the CH(OH)CH₃ group on opposite sides of the double bond). At C-2 (priorities OH $>$ CH=CHCH₃ $>$ CH₃ $>$ H) the first drawing has OH wedged and H dashed while the second has H wedged and OH dashed, but the carbon chain is also drawn from the other side; working out the sequence gives R for both. Same connectivity, same alkene geometry, same configuration : identical.