Determination of the standard enthalpy of formation of paratungstate A ion |
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| Affiliation: | 1. School of Environmental Engineering, Technical University of Crete, Polytechneioupolis, GR-73100 Chania, Greece;2. Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, United Kingdom |
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| Abstract: | Enthalpy changes for the reaction of HCl(aq) withNa2WO4 (aq) were measured at T = 298.15 K in a HT-1000 calorimeter. The standard enthalpy of reaction for the formation ofW7O246 − (aq) was calculated on the basis of the experimental results, ΔrHmo(298.15K ) = − (320.7 ± 1.0)kJ · mol − 1. Combining this with the values from the literature led to the standard enthalpy of formation of W7O246 − (aq),ΔfHmo (298.15 K) = − 6689.8 kJ · mol − 1. |
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