THE THERMOCHEMISTRY OF ISOTOPES. I. A CALORIMETRIC STUDY OF THE HEATS OF FORMATION OF HYDROGEN SULPHIDE AND DEUTERIUM SULPHIDE

Journal Article · Mon Dec 01 04:00:00 EST 1958 · Zhur. Fiz. Khim.

OSTI ID:4275451

Kapustinskii, A F; Kankovskii, R T

A calorimeter was described allowing measurements to be made of the heats of combustion of gaseous hydrogen compounds at constant atmospheric pressure. With the aid of this calorimeter the heats of combustion were measured of hydrogen and deuterium sulfides, and with their aid the heats of formation under standard conditions were calculated; that for the first compound was found to be 4.94 kg cal/mole and for the second, 5.71 kg cal/mole with an accuracy of 1.1 to 1.6%. The corresponding free energy values are 8.02 and 8.48. All this enabled one to establish the isotopic effect on the strength of chemical bonds. The energy of the chemical bond between hydrogen atoms and sulfur equals 81.2 kg cal, whereas between deuterium and sulfur it is 81.5 kg cal. (auth)

• Research Organization: Mendeleev Inst. of Chemistry and Tech., Moscow
• NSA Number: NSA-13-005315
• OSTI ID: 4275451
• Journal Information: Zhur. Fiz. Khim., Journal Name: Zhur. Fiz. Khim. Vol. Vol: 32
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

BINDING ENERGY
CALORIMETERS
CHEMISTRY
COMBUSTION
COMBUSTION HEAT
DEUTERIUM COMPOUNDS
ENERGY
ERRORS
FORMATION HEAT
FREE ENERGY
GASES
HEATING
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
ISOTOPE EFFECTS
MEASURED VALUES
NUMERICALS
PREPARATION
PRESSURE
THERMODYNAMICS