Lab Report: Determination of Iron in Cereals (I need the answer and calculation for this experiment) Today's

Lab Report: Determination of Iron in Cereals (I need the answer and calculation for this experiment)

     

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Today's Experiment Absorbance 0.8 0.7 06 05 0.4 03 02 01 0 Concentration (mg/l) y-0.114x R²-0.961 Beer's Law The amount of absorbed light is proportional to solution concentration. ThoughtCo LENGTH OF SAMPLE A-ELC ABSORBANCE MOLAR SOLUTION ASOPIVITY CONCENTRATION CONSTAN The iron present in cereal is extracted to form a solution containing Fe3+ (ferric) ions. • To make the presence of these ions in solution visible, thiocyanate ions (SCN-) are added. • These react with the Fe3+ ions to form a blood-red coloured complex: • Fe3+ (aq) + SCN- (aq) → [FeSCN]2+(ag) By comparing the absorbance value of this solution with the absorbance value of a series of standard solutions, with known Fe3+ concentrations, the concentration of iron in cereal can be determined. Today's Experiment Absorbance 0.8 0.7 06 05 0.4 03 02 01 0 Concentration (mg/l) y-0.114x R²-0.961 Beer's Law The amount of absorbed light is proportional to solution concentration. ThoughtCo LENGTH OF SAMPLE A-ELC ABSORBANCE MOLAR SOLUTION ASOPIVITY CONCENTRATION CONSTAN The iron present in cereal is extracted to form a solution containing Fe3+ (ferric) ions. • To make the presence of these ions in solution visible, thiocyanate ions (SCN-) are added. • These react with the Fe3+ ions to form a blood-red coloured complex: • Fe3+ (aq) + SCN- (aq) → [FeSCN]2+(ag) By comparing the absorbance value of this solution with the absorbance value of a series of standard solutions, with known Fe3+ concentrations, the concentration of iron in cereal can be determined.

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Question 3 y115x 160 x feseN y A Sample absake x Fese 2 Soln A mlar cone 1492160 ... View the full answer