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Vibrational spectral studies of solutions at elevated temperatures and pressures. 8. A Raman spectral study of ammonium hydrogen sulfate solutions and the HSO4--SO42- equilibrium


, : Vibrational spectral studies of solutions at elevated temperatures and pressures. 8. A Raman spectral study of ammonium hydrogen sulfate solutions and the HSO4--SO42- equilibrium. Journal of Physical Chemistry 90(2): 334-341

Raman spectra of aqueous ammonium hydrogen sulfate solutions spanning a temperature range of 25-300 degrees C, at a pressure of 10 MPa, have been measured. The conversion of sulfate to hydrogen sulfate ion is virtually complete at 300 degrees C. The relative integrated intensities of the 980-cm-1 line of SO42- and the 1040-1050-cm-1 lines of HSO4- have been measured. The relative integrated molal intensities are almost independent of temperature.

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