I need help with this question O T.J.Maxx RieName:REPORT SHEETConcentration of knownAbsorbance of knowniron solutionsiron solution(in mg/liter)1.0 mg/liter0.0391.5 mg/liter0.0582.0 mg/liter0.0782.5 mg/liter0.0 96Unknown Sample No:Unknown Iron sample No.:3.Absorbance of unknown iron sample:O·079Concentration of unknown iron sample from graph by interpolation (mg/liter):Reference value of unknown iron sample0.078% error (show calculations) :QUESTIONS 1:06ul 5GEIron in Water Online La...PROCEDURE:1.Obtain the standard iron solution whose concentration is 10 mg/liter. Fill a clean buretwith this standard iron solution. (Note: Be sure that you've rinsed the buret with 2 or 3 mlof this iron solution before completely filling it.)2.Obtain four 100 ml volumetric flasks. Label these flasks as follows: 1.0 mg/liter, 1.5mg/liter, 2.0 mg/liter, and 2.5 mg/liter.3.Into each flask, buret the proper amount of standard iron solution in order to prepare theconcentration written on each flask. Proceed as shown below,Flask no.ConcentrationMilliliter of iron solutionto put into each flask11.0 mg/liter10 ml1.5 mg/liter15 ml2.0 mg/liter| 2.5 mg/liter320 ml425 ml4.Fill each flask with sufficient water to bring the total volume to 100 ml. The 100 ml markis noted on the neck of the volumetric flask. These four flasks now contain iron solutionswhose concentrations are 1.0 mg/liter, 1.5 mg/liter, 2.0 mg/liter, and 2.5 mg/liter.5.Using a 25-ml graduated cylinder, measure 25 ml of each standard and place it into a100-ml beaker. (Note: Label these beakers so that you know which beaker contains aparticular iron solution.)6.Also place 25 ml of one Unknown solution into a 100-ml beaker.Add the contents of one FerroVer powder pillow to cach beaker (standard and unknown),and stir each solution. If iron is present, an orange-red color develops.7.8.Let each solution stand for two minutes after adding the powder pillow. Then within tenminutes, determine the absorbance of each solution.9.Use colorimeter to determine the absorbency of each solution. (Your instructor willdemonstrate how to operate the colorimeter).10.Construct a graph (use attached graph sheet). Plot absorbance (on y axis) versusconcentration (on x axis) for each of the known iron samples. From this graph and theabsorbance of your unknown sample, determine the concentration of iron in yourunknown sample.Name:DashboardCalendarTo DoNotificationsInbox因

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Concentration of unknown Iron sample from graph is determined as 2.05 mg/L…

Concentration of known Absorbance of known iron solutions iron solution (in mg/liter) 1.0 mg/liter 0.039 1.5 mg/liter 0.058 2.0 mg/liter 0.078 2.5 mg/liter 0.0 96 Unknown Sample No: