One such aid is the presence of
As you can see very clearly, propan-2-ol (A) does not contain an asymmetric
carbon, as all the four groups attached to the tetrahedral carbon are not
different We rotate the mirror image (B) of the molecule by 180° (structure
C) and try to overlap the structure (C) with the structure (A), these structures
completely overlap Thus propan-2-ol is an achiral molecule Jacobus 
Hendricus
Van’t Hoff (1852-1911)
received the first Nobel
Prize in Chemistry in
1901 for his work on
solutions