Factor analysis for isolation of the Raman spectra of aqueous sulfuric acid components

1984 ◽  
Vol 56 (4) ◽  
pp. 778-781 ◽  
Author(s):  
Edmund R. Malinowski ◽  
Robin A. Cox ◽  
Ulo L. Haldna
Keyword(s):  
Factor Analysis ◽  
Sulfuric Acid ◽  
Raman Spectra ◽  
Aqueous Sulfuric Acid

Resolution of Raman spectra of aqueous sulfuric acid mixtures using principal factor analysis

1981 ◽  
Vol 59 (17) ◽  
pp. 2591-2598 ◽  
Author(s):  
Robin A. Cox ◽  
Ülo L. Haldna ◽  
K. Loralee Idler ◽  
Keith Yates
Keyword(s):  
Factor Analysis ◽  
Sulfuric Acid ◽  
Raman Spectra ◽  
Ion Pair ◽  
Medium Composition ◽  
Principal Factor ◽  
Water Molecules ◽  
Concentrated Solutions ◽  
Principal Factor Analysis ◽  
Hydrated Ion

Principal factor analysis has been applied to Raman spectra of 26 sulfuric acid/water mixtures covering the 0–100% H2SO4 concentration range. The analysis greatly facilitates the identification of peaks due to different species. The results show that SO42− ions and "free" HSO4− ions do not co-exist with undissociated H2SO4 molecules in solution and that two water molecules rather than one are required for the first ionization of H2SO4. A species with the composition H2SO4•2H2O, assigned a hydrated ion pair structure, reaches maximum concentration at the same medium composition at which SO42−, free HSO4−, and H2SO4 are at concentration minima, about 75% w/w. The only species apparent in the more concentrated solutions are the ion pair and undissociated H2SO4, which could be taken to mean that H2SO4 is a weaker acid than H3O+, but a stronger one than H3O+•H2O (or H5O2+, if this entity has a real existence). Separate peaks due to the postulated H3O+•H2SO4 (or H5SO5+) were not observed.

Resonance Raman spectra of Ru(bpz) 32+ in aqueous sulfuric acid solutions

1992 ◽  
Vol 23 (12) ◽  
pp. 681-689 ◽  
Author(s):  
Gerald D. Danzer ◽  
James R. Kincaid
Keyword(s):  
Sulfuric Acid ◽  
Raman Spectra ◽  
Resonance Raman ◽  
Acid Solutions ◽  
Aqueous Sulfuric Acid ◽  
Resonance Raman Spectra ◽  
Sulfuric Acid Solutions

Raman spectra of nitric acid in aqueous sulfuric acid solutions

1984 ◽  
Vol 33 (7) ◽  
pp. 1401-1405 ◽  
Author(s):  
N. B. Librovich ◽  
B. V. Rassadin ◽  
I. M. Medvetskaya ◽  
L. R. Andreeva ◽  
M. I. Vinnik
Keyword(s):  
Sulfuric Acid ◽  
Nitric Acid ◽  
Raman Spectra ◽  
Acid Solutions ◽  
Aqueous Sulfuric Acid ◽  
Sulfuric Acid Solutions

Electrochemistry of Gold in Aqueous Sulfuric Acid Solutions under Neural Stimulation Conditions

2005 ◽  
Vol 152 (7) ◽  
pp. E212 ◽  
Author(s):  
Daniel R. Merrill ◽  
Ionel C. Stefan ◽  
Daniel A. Scherson ◽  
J. Thomas Mortimer
Keyword(s):  
Sulfuric Acid ◽  
Neural Stimulation ◽  
Acid Solutions ◽  
Aqueous Sulfuric Acid ◽  
Sulfuric Acid Solutions

Reduction of bromine(V) by cerium(III), manganese(II), and neptunium(V) in aqueous sulfuric acid

1971 ◽  
Vol 93 (26) ◽  
pp. 7315-7315 ◽  
Author(s):  
Richard C. Thompson
Keyword(s):  
Sulfuric Acid ◽  
Aqueous Sulfuric Acid

scholarly journals Synthesis of Monodisperse Fine TiO2 Particles by Aqueous Sulfuric Acid Droplets Solubilized by Reversed Micelles

1998 ◽  
Vol 71 (4) ◽  
pp. 225-231
Author(s):  
Daisuke KANEKO ◽  
Takeshi KAWAI ◽  
Kijiro KON-NO
Keyword(s):  
Sulfuric Acid ◽  
Reversed Micelles ◽  
Tio2 Particles ◽  
Aqueous Sulfuric Acid ◽  
Fine Tio2
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