# The data I have for part 1 In this part of the lab- you measured the a.docx

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The data I have for part 1 In this part of the lab, you measured the absorbance values of two solutions over a range of wavelengths to determine the wavelength that is absorbed most by the dissolved solute. We call this the wavelength of maximum absorbance. 1. Describe the solution concentrations and the wavelengths of maximum absorption for both the copper(II) sulfate and the cobalt(II) chloride solutions. Also record the absorbance value at the wavelength of maximum absorption. Solution Concentration (M) Wavelengthx (nm) Absorbance IF CuSO CoCl 2. (a) Compare the color of each solution to the color of the wavelength of light that is absorbed most effectively-shown by the wavelength of maximum absorption. For each solution, how do the colors relate to one another on a color wheel? Google \"color wheel\" if you don\'t happen to have one handy! (b) Explain your answer to 2(a) in terms of \"light absorbed\" vs. \"light reflected\" by the solution. Solution 1.For CuSO4 : . Conc.of solution = 0.060M wavelength of max absorbance= 700nm Absorbance value at wavelength of max. Absorbance= 0.52 For CoCl2 :. Conc. = 0.025M Wavelength of maximum absorbance= 500nm Absorbance at this wavelength= 0.23 . 2. (a) mThe light emitted by any substance (that we see) is the complementary light of that color which it absorbs from visible light . As CuSO4 appears blue ,so it absorbs red light from the visible light .And as CoCl2 appears of pink color so it absorbs Yellow color from incoming wavelength of light . Complementary colors are opposite to each others. b) .As stated earlier , the light emitted(reflected) is of complementary color as light absorbed .As in our case CuSO4 absorbs light of red colour and emit of blue colour while CoCl2 absorbs yellow light and emits violet light . .

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### The data I have for part 1 In this part of the lab- you measured the a.docx

• 1. The data I have for part 1 In this part of the lab, you measured the absorbance values of two solutions over a range of wavelengths to determine the wavelength that is absorbed most by the dissolved solute. We call this the wavelength of maximum absorbance. 1. Describe the solution concentrations and the wavelengths of maximum absorption for both the copper(II) sulfate and the cobalt(II) chloride solutions. Also record the absorbance value at the wavelength of maximum absorption. Solution Concentration (M) Wavelengthx (nm) Absorbance IF CuSO CoCl 2. (a) Compare the color of each solution to the color of the wavelength of light that is absorbed most effectively-shown by the wavelength of maximum absorption. For each solution, how do the colors relate to one another on a color wheel? Google "color wheel" if you don't happen to have one handy! (b) Explain your answer to 2(a) in terms of "light absorbed" vs. "light reflected" by the solution. Solution 1.For CuSO4 : . Conc.of solution = 0.060M wavelength of max absorbance= 700nm Absorbance value at wavelength of max. Absorbance= 0.52 For CoCl2 :. Conc. = 0.025M Wavelength of maximum absorbance= 500nm Absorbance at this wavelength= 0.23 . 2. (a) mThe light emitted by any substance (that we see) is the complementary light of that color which it absorbs from visible light . As CuSO4 appears blue ,so it absorbs red light from the visible light .And as CoCl2 appears of pink color so it absorbs Yellow color from incoming wavelength of light . Complementary colors are opposite to each others.
• 2. b) .As stated earlier , the light emitted(reflected) is of complementary color as light absorbed .As in our case CuSO4 absorbs light of red colour and emit of blue colour while CoCl2 absorbs yellow light and emits violet light .
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