KINETICS OF THE VANADIUM(II)-VANADIUM(III) ISOTOPIC EXCHANGE REACTION

Journal Article · Thu Nov 20 04:00:00 EST 1958 · Journal of the American Chemical Society (U.S.)

DOI:https://doi.org/10.1021/ja01555a007· OSTI ID:4297548

Krishnamurty, K V; Wahl, A C

In 1.00 f HClO/sub 4/ and ionic strength 2.00 the rate of exchange between VII and VIII is consistent with the law rate = k- (VII)(VIII). At 25 the value of k is 0.82 f/sup -1/min/sup -1/ The experimental activation energy is 13.2 kcal/mole. The rate was not affected measurably by a fivefold increase in the surface area of the reaction vessel, by the absence of ordinary diffuse light, by an increase in the ionic strength to 4.00 or by replacement of NaClO/ sub 4/ by LiClO/sub 4/ for adjustment of ionic strength. The rate is increased by lowering the hydrogen ion concentration below 0.5 M and by the presence of chloride ion. The rate data are consistent with the expression k = k/sub 1 + k/ sub 2/H/sup +/) + k/sub 3/(Cl/sub -), the val ues of the constants at 25 being k/sub 1/= 0.61 f/sup -1/ min/sup -1/ k/sub 2/ = 0.21 min/sup -1/, and k/sub 3/= ~85 f/sup -2/ min/sup -1/. (auth)

• Research Organization: Washington Univ., St. Louis
• Sponsoring Organization: USDOE
• NSA Number: NSA-13-002042
• OSTI ID: 4297548
• Journal Information: Journal of the American Chemical Society (U.S.), Journal Name: Journal of the American Chemical Society (U.S.) Vol. Vol: 80; ISSN JACSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
COMPOUNDS
EQUILIBRIUM
EXCITATION
INTERFERING ELEMENTS
IONS
ISOTOPIC EXCHANGE
LITHIUM COMPOUNDS
MEASURED VALUES
OXIDATION
PERCHLORIC ACID
PHOTOCHEMISTRY
REACTION KINETICS
REDUCTION
SALTS
SODIUM COMPOUNDS
SURFACES
TEMPERATURE
THERMODYNAMICS
VANADIUM COMPOUNDS
VESSELS