Sulfuric acid: heat of formation of aqueous solutions by rotating-bomb calorimetry

Journal Article · Fri Nov 04 23:00:00 EST 1960 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja01506a006· OSTI ID:7319856

Good, W D; Lacina, J L; McCullough, J P

Rotating-bomb calorimetry of rhombic sulfur, mixed with hydrocarbon oil in widely varying proportions, led to a more accurate value of the heat of combustion. The heat of formation of aqueous sulfuric acid was calculated from the measured value of the heat of combustion. For formation of H/sub 2/SO/sub 4/ . 115H/sub 2/O(liq.) from rhombic sulfur, gaseous hydrogen and oxygen, ..delta..Hf/sub 220/./sub 10//sup 0/ is -212.17 +- 0.06 local. mole/sup -1/. Discrepancies in previous determinations may have stemmed in part from failure to detect and correct for N/sub 2/O in the reaction products.

• Research Organization: Bureau of Mines, Bartlesville, OK
• OSTI ID: 7319856
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 82:21; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AQUEOUS SOLUTIONS
CALORIMETRY
COMBUSTION HEAT
DISPERSIONS
ENERGY
ENTHALPY
FORMATION HEAT
HEAT
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MIXTURES
PHYSICAL PROPERTIES
REACTION HEAT
SOLUTIONS
SULFURIC ACID
THERMODYNAMIC PROPERTIES