Differential Temperature Modelling (DTM) for the
Determination of Molecular Masses of Strong Acids (Per
Chloric and Sulphuric Acids)

Odokwo; E.O.; Ogunyemi; B.T.

doi:https://doi.org/10.56201/ijccp.v8.no1.2022.pg65.71

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Differential Temperature Modelling (DTM) for the Determination of Molecular Masses of Strong Acids (Per Chloric and Sulphuric Acids)

Odokwo, E.O. and Ogunyemi, B.T.

Abstract

The molecular masses of two (2) strong acids: per chloric (HClO 4 ) and sulphuric (H 2 SO 4 ) have been determined using an experimental guided thermochemical model. The exothermic spree of strong acids was exploited at various percentage dilutions ranging from 10% to 50% using standard procedures. The differential temperature, ?T and other thermochemical parameters (basic constants, kb 2 and thermohydrobasic constants, ?T- 18kb 3 ) were measured and theoretically manipulated. The ?T (HClO 4 ) / o C: 6.0, 11.0, 18.0, 22.0, 27.0 and ?T (H 2 SO 4 ) / o C: 20.0, 48.5, 56.0, 72.0, 84.0 at constant pressure and volume, showed a steady increase in differential temperature within the percentage dilution range. The basic constants: 0.051, 0.093, 0.152, 0.185, 0.228 were obtained for per chloric acid and 0.149, 0.361, 0.417, 0.536, 0.625 were obtained for sulpuric acid at constant pressure and volume. The thermohydrobasic constants: 5.082, 9.326, 15.264, 18.670, 22.896 were obtained for per chloric acid and 14.643, 35.509, 41.001, 52.716, 61.501 were obtained for sulpuric acid at constant pressure and volume. The inverse of the gradient of the plot of basic constants, Kb 2 versus thermohydrobasic constants, ?T – 18Kb 3 affords the molecular masses of 101.00±0.51 a.m.u and 98.04±0.04 a.m.u for per chloric acid and sulphuric acid respectively.

Keywords

Differential Temperature Model (DTF)Thermochemical constantsMolecular massesStrong acids

References

Akpan, I. A. (2015). Determination of molecular mass of strong acids by Differential Temperature Model (DTM) using H 3 PO 4 and HBF 4 for Classical Demonstration. Journal of Material Science and Chemical Engineering. 3, 41-47. Pleil, J.D. and Isaac, K.K. (2016). High-Resolution Mass Spectrometry: Basic Principles for Using Exact Mass and Mass Defect for Discovering Analysis of Organic Molecules in Blood, Breath, Urine and Environmental Media. J. Breath Res.10, 1-11. Morentes, E. and Grusak, M.A. (1998). Mass Determination of Low-Molecular-Weight Protein Phloem Sap Using Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry. Journal of Experimental Botany. 49 (322), 903-911. Little, J.L., Williams, A.J., Pshenichnor, A. and Tkachenko, V. (2012) Identification of “Known and Unknowns” Utilizing Accurate Mass Data and Chemspider. Journal of The American Society for Mass Spectrometry. 23 (1), 179-185. Ibrahim, F.M. (2015). Determination of molecular weight of synthetic sugars by measuring the freezing point depression (colligative peoperties). IJSR, 6(9),1229-1231. Ge, X. and Wang, X. (2009). “ Estimation of Freezing Point Depression, Boiling Point Elevation And Vaporization Enthalpies Of Electrolyte Solutions”. Industrial and Engineering Chemistry Research. 48 (10), 5123-5123. Atkins, P and de Paula, J. (2006). Physical Chemistry for the Life Sciences. New York: W.H. Freeman Company. Ebbing, D.D. and Gammon, S.D. (2009). General chemistry (9th edition). Boston: Houghton Mifflin Company. Sharma, K.K. and Sharma, L.K. (1999). A Textbook of Physical Chemistry (4th Revised Edition). India: Vikas publishing House, PVT Ltd. Parsons, J., Holmes, J. B., Rojas, J. M., Tsai, J. and Strauss, C. E. (2005). Practical Conversion from torsion space to cartesian space for in Silico protein synthesis. J Comput Chem. 26, 1063-1068.

Differential Temperature Modelling (DTM) for the Determination of Molecular Masses of Strong Acids (Per Chloric and Sulphuric Acids)

Abstract

Keywords

References

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