# minimalistic pH model fixed from OB


#carboxylic acid 
[O:1]=[C:2][$([OH1,Oh1]):3]>> [O:1]=[C:2]-[OX1-1:3] 4.0 

#amide
[N^3-0;!$(N~[!#6;!#1]):1] >> [N+1:1]                            4.0
