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Absorbency is directly reapportion to the path length, b, and the concentration, c, of the absorbing species. Beer’s Law states that A = BBC, where e is a constant of proportionality, called the absorptive. Different molecules absorb radiation of different wavelengths. An absorption spectrum will show a number of absorption bands corresponding to structural groups within the molecule. In this experiment wavelength range between 400-Mann is used in order to detect in the visible range. Steel is an alloy primarily composed of iron with carbon content between 0. % and by weight. 1. 5% manganese is may be used too, to provide additional strength for a modest price increase. Carbon and other elements act as a hardening agent, preventing dislocations in the iron atom crystal lattice from sliding past one another. Manganese is essential to iron and steel production by virtue of its sulfur-fixing, digitizing, and alloying properties. In order to detect the manganese amount in the compound KICK is used to oxidize Mn+2 to Mn +7 since Mn+2 does not absorb in the visible region therefore cannot be detected.

Tungsten lamp is used in the experiment to reach the range between 400-Mann. After the beam comes from the tungsten lamp, it passes through the monochromatic to reach the wavelength range which was selected to find the maximum wavelength. After the light passes through the monochromatic it goes through the cavetti and then the detector. The cavetti is made of quartz in order to pass the visible light whereas a glass cavetti would absorb it. The Redo Reaction: 5104- +2 Man+ +3 H2O ? 2 Mann +5103- +6 Reagents: Km KICK HAPPY Unknown Solution

Denizen Water Apparatus: Pipette Beaker Heater UNCIAL IV-VISA Spectrometer Quartz Cavetti Volumetric Flask Calculations: Weight of Km : 0. 09149g weight of KICK : 0. 40807g ©Max: Mann Absorbency for the unknown: 0,41 5 [pica Conclusion: l: Qualitative and or Quantitative identification II: Error discussion While at the addition step of HAPPY after mm’ of HAPPY is pipettes, it was transferred into a volumetric cylinder, and then transferred into the unknown solution and the blank solution. There may have been material loss during the recess.

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