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Specialty Chemistry Forums => Chemical Engineering Forum => Topic started by: CE444 on January 29, 2007, 02:55:18 AM

Title: Group Contribution of -SO3Na in Estimation of Standard Heat of Formation
Post by: CE444 on January 29, 2007, 02:55:18 AM

How does one estimate the standard heat of formation of organic compounds which contain the -SO3Na group? An example of such a compound is the sodium salt of benzenesulphonic acid (also called sodium benzenesulfonate). What is the value (in units such as kJ/gmol, kcal/gmol, kJ/kg or kcal/kg) of the contribution to the standard heat of formation by the -SO3Na group? Please suggest any group contribution method which can solve this problem.

Title: Re: Group Contribution of -SO3Na in Estimation of Standard Heat of Formation
Post by: Donaldson Tan on January 29, 2007, 03:46:58 AM

What about adding and subtracting bond energy values from the heat of formation of Sodium Sulphate?