Pulse radiolysis of aqueous thiocyanate and iodide solutions
- 1 January 1968
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 64, 2389-2397
- https://doi.org/10.1039/tf9686402389
Abstract
The transient absorption produced by the pulse radiolysis of CNS– is shown to be due to (CNS)2 formed by the reactions : [graphic omitted] The rate constants of reactions (1), (2) and (3) at 22°C determined from kinetic and equilibrium measurements are 2.8 × 1010, 7.0 × 109 M–1 sec–1 and 3.4 × 104 sec–1, respectively. For iodide ion, which forms I2 in the same way, the equilibrium constant for I2 formation is 1.13 × 105 M–1. The corresponding kinetic constants cannot be determined as accurately as for CNS– but are estimated to be 3.4 × 1010, 7.6 × 109 M–1 sec–1 and 6 × 104 sec–1.Keywords
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