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High‐Pressure Stopped‐Flow Study of the Kinetics of Base Hydrolysis of the Dichromate Ion by Hydroxide Ion, Ammonia, Water, and 2,6‐Lutidine in Aqueous Solution
Author(s) -
Moore Peter,
Ducommun Yves,
Nichols Peter J.,
Merbach André E.
Publication year - 1983
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19830660809
Subject(s) - chemistry , aqueous solution , hydrolysis , hydroxide , base (topology) , ammonia , inorganic chemistry , ion , kinetics , nuclear chemistry , organic chemistry , mathematical analysis , physics , mathematics , quantum mechanics
Volumes of activation for the base hydrolysis of the dichromate anion have been measured at 298.2 K, using high‐pressure stopped‐flow spectrophotometry. The values of Δ V * (cm 3 · mol −1 ), − 17.9 ± 0.6, − 19.2 ± 0.9, − 24.9 ± 0.9 and − 26.0 ± 0.7 for OH − , NH 3 , H 2 O and 2,6‐lutidine, respectively, are consistent with an interchange mechanism with associative activation mode ( I a ).