Spectrophotometry to find the concentration of unknown solution of copper nitrate

Purpose: To find the stringency of an unknown solution training spectrophotometry. Hypothesis: I believe the assimilation should contain tight 13.5-14 cc of our copper nitrate solution foreshortend in a volumetrical flask as its absorbance value is very close to the value obtained with our 15 cc solution. Background southward: Spectrophotometry: Spectrophotometry involves the use of a spectrophotometer. A spectrophotometer is a photometer(a device for timeworn light intensity) that freighter measure intensity as a function of the color, or to a greater extent specifically, the wavelength of light. There be more kinds of spectrophotometers. Among the most important distinctions used to classify them are the wavelengths they proceeding with, the measurement techniques they use, how they acquire a spectrum, and the sources of intensity variation they are designed to measure. The more direct relation of spectrophotometry to chemistry is that we sess manip ulate its function in do to calculate the concentration of an unknown solution. This is usually done with the use of the beer lambert canvass which is: A=e.C.L Where A=Light absorbance, e=molar absorbtivity, C=concentration of solution and L= the distance our light must(prenominal) tend through our cuvette.

Materials: - Copper Powder - Nitric Acid - ane 250 cm^3 volumetric flask and ten reverse cm^3 volumetric flasks. - Pipettes. - Beakers. - 1 Weighing scale leaf - 1 fuming cupboard. - 1 Spectrophotometer. Method to obtain solutions: - Weigh 0.25g of Cu powder in a beaker. - U nder fuming cupboard resume 1 cm^3 of Nitri! c Acid in the same beaker. - bourgeon the Copper Nitrate solution into the 250 cm^3 volumetric flask and dilute it with water until it reaches the line. - using a pipet move 5cc, 10cc, 15cc and 20cc of the solution into different volumetric flasks each of one hundred cm^3 volume and dilute them until the line form and then label them accordingly. - Using a pipette pour 10cc of Ammonium Hydroxide into a 100 cm^3...If you motive to get a full essay, order it on our website: BestEssayCheap.com

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