Temperature oscillations in bromate–gallic acid system: A calorimetric study

✍ Scribed by Kallol Mukherjee; S. P. Moulik; D. C. Mukherjee

• Book ID: 102445401
• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 394 KB
• Volume: 27
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550270606

✦ Synopsis

The oscillatory reaction between potassium bromate and gallic acid in sulfuric acid medium has been studied calorimetrically with and without ferroin indicator. Enthalpy changes during oscillations have increased with increasing bromate concentration in presence and absence of the indicator. Prominent catalytic activity of the indicator has been observed. An initial large enthalpy change has been observed in both uncatalyzed and catalyzed conditions prior to the starting of oscillation. Attempts have been made to correlate the main thermal events with the proposed mechanism of the reaction.