HEAT OF HYDROLYSIS OF URANIUM (IV) IN PERCHLORIC ACID SOLUTIONS

Abstract

The heat of hydrolysis of uranium (IV) in perchloric acid solution has been measured by a spectrophotometric technique. A value of 10.7 ± 1 kcal. per mole was obtained, in good agreement with a previous value determined by a calorimetric method. The entropy of association of uranium (IV) with hydroxyl ion is +52 e.u.