Effect of Increasing The Concentration Of KAl(SO4)2.12H2O On Some Optical Properties Of The Solutions Prepared

Abstract

Some of optical properties of KAl(SO₄)₂.12H₂O dissolves in distilled water had been studied at different concentrations (0.05% , 0.075% , 0.1% , 0.125 and 0.15 gm./ml). The optical properties had been measured which included measuring absorbance by using (Double-Beam Spectrophotometer (UV-1800)) and refractive index by using refractometer and from these two properties  other properties were calculated such as: reflectance,  transmittance , coefficient of fineness, critical angle and brewster angle.  The results showed that all these properties have increment with the increase of KAl(SO₄)₂.12H₂O concentration except that critical angle was decreased with increasing of KAl(SO₄)₂.12H₂O concentration. Also, the absorbance values ??for the wavelength were studies and noticed it is observed that the values of the absorbance decrease with increasing wavelength.

Keywords: KAl(SO₄)₂.12H₂O solution, optical properties, Refractometer, (Double- Beam Spectrophotometer (UV-1800)).