Effect of the Acidic and Alkaline Solutions on K2CrO4 and K2Cr2O7 by Ultraviolet and Visible Measurement
Keywords:Alkaline, Stoke solutions, pH values, Wavelength, Red shift, Spectrum
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.
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.
How to Cite
Articles accepted for publication in Al-Mustansiriyah Journal of Science (MJS) are protected under the Creative Commons Attribution 4.0 International License (CC BY-NC). Authors of accepted articles are requested to sign a copyright release form prior to their article being published. All authors must agree to the submission, sign copyright release forms, and agree to be included in any correspondence between MJS and the authors before submitting a work to MJS. For personal or educational use, permission is given without charge to print or create digital copies of all or portions of a MJS article. However, copies must not be produced or distributed for monetary gain. It is necessary to respect the copyright of any parts of this work that are not owned by MJS.