ABSTRACT

The energies of combustion of benzenesulfonamide (cr), o-toluenesulfonamide (cr), p-toluenesulfonamide (cr), 2-aminobenzenesulfonamide (cr), and 4-aminobenzenesulfonamide were determined using a combustion rotating-bomb calorimeter. The molar energies of combustion for these compounds in the condensed phase at T = 298.15 K were determined as: (3611.4 +- 1.8) kJ mol-1, (4280.7 +- 1.1) kJ mol-1, (4458.8 +- 1.5) kJ mol-1, (3745.7 +- 1.2) kJ mol-1 and (3725.6 +- 1.9) kJ mol-1, respectively. From these values, corresponding standard molar enthalpies of formation were obtained as: (347.1 +- 1.9) kJ mol-1, (356.5 +- 1.4) kJ mol-1, (178.4 +- 1.7) kJ mol-1, (356.9 +- 1.4) kJ mol-1 and (377.1 +- 2.1) kJ mol-1, respectively. A differential scanning calorimeter was used to determine the purities and heat capacities of the compounds studied here. Polyethene bags were used as a combustion auxiliary in the combustion experiments.

Compounds

#	Formula	Name
1	H2O4S	sulfuric acid
2	CO2	carbon dioxide
3	N2	nitrogen
4	H2O	water
5	O2	oxygen
6	C6H7NO2S	benzenesulfonamide
7	C7H9NO2S	o-toluenesulfonamide
8	C7H9NO2S	p-toluenesulfonamide
9	C6H8N2O2S	2-aminobenzenesulfonamide
10	C6H8N2O2S	4-aminobenzenesulfonamide

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Phase	Method	#Points
POMD	6	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	6	Normal melting temperature, K ; Crystal		Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	6	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	7	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	7	Normal melting temperature, K ; Crystal		Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	7	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	8	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	8	Normal melting temperature, K ; Crystal		Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	8	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	9	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	9	Normal melting temperature, K ; Crystal		Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	9	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
POMD	10	Molar enthalpy of transition or fusion, kJ/mol ; Crystal		Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	10	Normal melting temperature, K ; Crystal		Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	10	Molar heat capacity at constant pressure, J/K/mol ; Crystal	Temperature, K; Crystal Pressure, kPa; Crystal	Crystal	Small sample (50 mg) DSC	1
RXND	9 1 2 3 4 5	Specific internal energy of reaction at constant volume, J/g			Rotating bomb calorimetry	1
RXND	10 1 2 3 4 5	Specific internal energy of reaction at constant volume, J/g			Rotating bomb calorimetry	1
RXND	6 1 2 3 4 5	Specific internal energy of reaction at constant volume, J/g			Rotating bomb calorimetry	1
RXND	7 1 2 3 4 5	Specific internal energy of reaction at constant volume, J/g			Rotating bomb calorimetry	1
RXND	8 1 2 3 4 5	Specific internal energy of reaction at constant volume, J/g			Rotating bomb calorimetry	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Enthalpies of combustion and formation of benzenesulfonamide and some of its derivatives

Flores, H.[Henoc], Camarillo, E. A., Amador, P.[Patricia]

ABSTRACT