Effect of the Acidic and Alkaline Solutions on K2CrO4 and K2Cr2O7 by Ultraviolet and Visible Measurement

Mohammad Radi Mohammad, Hasanain Saad Azeez

Abstract


In this work different amount of acidic (HCl) and alkaline (NaOH) solutions were added to stoke solutions of K2CrO4 and K2Cr2O7 to show the effect of pH values on their spectra. The results of UV-Visible spectroscopy shows that, the Changing of solution pH value when drops of HCl were added led to shift wavelength of K2CrO4 spectrum while no change has been occurred in K2Cr2O7 spectrum. However, Changing PH values solution by adding drops of NaOH led to change in wavelength red shift for K2Cr2O7 while no changes has been occurred in spectrum of K2CrO4.


Keywords


Alkaline, Stoke solutions, pH values, Wavelength, Red shift, Spectrum

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References


R. Chang: “Basic principle of spectroscopy”, Mc Graw-Hill Kogakusha, Tokyo, 1971.

Born, M. “Atomic Physics”, Hafner publishing company, Inc., New York, 1966.

Steinfeld, J., “Molecules and Radiation”, An introduction to Modern Molecular Spectroscopy, Harper and Row, 1974.

F. Cardarell “Scientific unit conversion” (Springer, Heidelberg 1998).

P. J. Mohr, B.N. Taylor “Adjusting the values of the fundamental constants”, Phys., 2001.

G. Anger, J. Halstenberg, K. Hochgeschwender, Ch. Scherhag, U. Korallus, H. Knopf, P. Schmidt, M. Ohlinger, “Chromium Compounds”, in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005.

R.J. Lewis, “Hazardous Chemicals Desk Reference”, Wiley-Interscience, 6th Edition, 2008.

M. Saha, C.R. Srinivas; S.D. Shenoy, C. Balachandran, S. Acharya, “Footwear dermatitis”, Contact Dermatitis, Vol. 28, PP. 260–264, No. 5, 1993.

P. Roto, H. Sainio, T. Reunala, P. Laippala, “Addition of ferrous sulfate to cement and risk of chromium dermatitis among construction workers”, Contact Dermatitis, Vol. 34, No. 1, PP. 43–50, 1996.




DOI: http://dx.doi.org/10.23851/mjs.v30i1.722

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