Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy p. 715 - 720 (1989)
Update date:2022-08-16
Topics:
Edwards, H. G. M.
The Raman and i.r. spectra of trifluoromethanesulphonic acid, CF3SO3H, have been obtained, and vibrational assignments made which are consistent with Cs molecular symmetry.The degrees of dissociation of CF3SO3H in aqueous solution in the concentration range 1.8-11.1 M were determined from Raman intensity measurements on the Δν = 1034 cm-1 band characteristic of the CF3SO3- ion.The results confirm that CF3SO3H is more dissociated into CF3SO3- ions than CH3SO3H is into CH3SO3- at similar concentrations.A limiting value of Kc = 280 mol dm-3 is calculated for low acid concentrations of CF3SO3H.
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