Abstract
The kinetics of photodecomposition of solid K 3Zr 2(O 2) 2F 7 · 2H 2O have been studied under vacuum as a function of intensity and temperature by measuring the evolved oxygen with the help of a McLeod Gauge. Pressure-time curves are parabolic in nature and the data fit the empirical equation p = kt 1 2 . The rate of photodecomposition is a linear function of intensity. The activation energy determined from an Arrhenius plot, in the temperature range 15–55°C, of the title compound is 2.15 kcal mole −1 (9.00 kJ mole −1).
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