Abstract
Fundamental properties, density (ρ) and viscosity (η), of citric acid (CA) and disodium hydrogen orthophosphate (DSP) at various strengths were obtained at different temperatures. The ρ and η values were used to determine apparent molal volumes and viscosity of systems. The ρ, VΦ and η values were regressed against molalitym for ρ0, η0 and V 0Φ , the limiting constants at infinite dilution (m → 0) for ionic and molecular interactions. The ρ0 and V 0Φ of aq. acids are higher than those of aq. DSP and the viscosity of DSP is higher than that of aq. CA. Examination of ρ0 and V 0Φ functions indicates that mutual compositions of CA and DSP counterbalance concentration and temperature effects on pH in bioprocesses.
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Singh, M. Study of apparent molal volume and viscosity of mutual citric acid and disodium hydrogen orthophosphate aqueous systems. J Chem Sci 118, 269–274 (2006). https://doi.org/10.1007/BF02708287
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DOI: https://doi.org/10.1007/BF02708287