messages: Au bout de 4 heures, le mélange réactionnel est amené à 0°C et additionné de 2,5 ml d'une solution 2,5 M KHCO 3 .
  
  
  
  would you be so kind as to change this text to english?
messages: user
messages: At the end of 4 hours, the reaction mixture was brought to 0° C. and supplemented with 2.5 ml of a 2.5 M KHCO3 solution.
messages: assistant