Tetramethyllead: heat of formation by rotating-bomb calorimetry

Journal Article · Wed Jul 01 00:00:00 EDT 1959 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150577a025· OSTI ID:7098519

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

Combustion calorimetry of tetramethyllead was done by a rotating-bomb method. The experiments gave for the reaction (CH/sub 3/)/sub 4/Pb(liq) + 2HNO/sub 3/(in 40 H/sub 2/O) + 7.5 O/sub 2/(g) = Pb(NO/sub 3/)/sub 2/(c) + 7 H/sub 2/O(liq) + 4 CO/sub 2/(g) the value ..delta..H/sup 0//sub 298/./sub 16/ = - 886.8 +- 0.3 kcal. The heat of vaporization was calculated from the results of vapor pressure measurements. Derived values for the heat of formation from graphite, hydrogen gas and lead metal, ..delta..Hf/sup 0//sub 298/./sub 16/, are 23.5 kcal. mole/sup -1/ for the liquid and 32.6 kcal. mole/sup -1/ for the gas.

• Research Organization: Bureau of Mines, Bartlesville, OK
• OSTI ID: 7098519
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 63:7; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CALORIMETRY
COMBUSTION HEAT
ENERGY
ENTHALPY
FLUIDS
FORMATION HEAT
GASES
HEAT
LEAD COMPOUNDS
LIQUIDS
MEDIUM TEMPERATURE
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHYSICAL PROPERTIES
REACTION HEAT
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
VAPOR PRESSURE
VAPORIZATION HEAT