Standard heats of formation of NaH2PO4, Na2HPO4 and Na3PO4
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 63, 2913-2916
- https://doi.org/10.1039/tf9676302913
Abstract
The standard heats of formation of NaH2PO4, Na2HPO4and Na3PO4 have been determined by solution calorimetry using reaction schemes involving aqueous NaOH and aqueous H3PO4. The values obtained are: ΔH° f298 NaH2PO4(c)=–369.0±0.5 kcal mole–1, ΔH° f298 Na2HPO4(c)=–419.4±0.5 kcal mole–1, ΔH° f298 Na3PO4(c)=–459.7±0.5 kcal mole–1.Keywords
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