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- W2048771829 abstract "The oxygen-exchange reaction between chromate ions and water has been studied under the following conditions: 25 °C, pH=7–12, [Cr(VI)]=0.075 mol dm−3, I=0.2 and 1 mol dm−3. The rate law of the exchange reaction has been found to be:R=k_1[CrO_4^2-]+k_2[HCrO_4^-]+k_3[H^+][HCrO_4^-]+k_4[HCrO_4^-][CrO_4^2-]+k_5[HCrO_4^-]^2. The exchange rate has been analyzed in terms of this rate law to obtain the values of k1–k5. The presence of the third-order rate term in [Cr(VI)] has been suggested. The activation energy of the overall exchange reaction (I=1 mol dm−3) is (25.5±0.7) kJ/mol at pH 7.4 and (98.9±1.0) kJ/mol at pH 11.0. The salt effect is negative at pH 10.5." @default.
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- W2048771829 date "1980-11-01" @default.
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- W2048771829 title "The Kinetics of Oxygen-exchange Reaction between Chromate Ions and Water" @default.
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