Equilibrium and Kinetics of Bromine Hydrolysis
Inorganic Chemistry1996Vol. 35(4), pp. 995–1000
Citations Over TimeTop 12% of 1996 papers
Abstract
Equilibrium constants for bromine hydrolysis, K1 = [HOBr][H+][Br-]/[Br2(aq)], are determined as a function of ionic strength (μ) at 25.0 °C and as a function of temperature at μ ≃ 0 M. At μ ≃ 0 M and 25.0 °C, K1 = (3.5 ± 0.1) × 10-9 M2 and ΔH° = 62 ± 1 kJ mol-1. At μ = 0.50 M and 25.0 °C, K1 = (6.1 ± 0.1) × 10-9 M2 and the rate constant (k-1) for the reverse reaction of HOBr + H+ + Br- equals (1.6 ± 0.2) × 1010 M-2 s-1. This reaction is general-acid-assisted with a Brønsted α value of 0.2. The corresponding Br2(aq) hydrolysis rate constant, k1, equals 97 s-1, and the reaction is general-base-assisted (β = 0.8).
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