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6 Nov 2019
A set of standard solutions with known [FeSCN2- were created and the absorbance was measured in a spectrophotometer. The following data was obtained Standard A Standard B Standard C Standard D Standard E Standard F [FeSCN2+] irn standard solution Absorbance 2.0 x 10-5 4.0 x 10-5 6.0 x 10-5 8.0 x 105 1.00x 104 4.80 x 10-4 0.043 0.087 0.125 0.173 0.211 1.050 A plot and trendline were obtained from the data and are given as: Absorbance vs Concentration 1.200 y 2193.4x 0.0036 R2 0.9999 ã000 0.800 0.600 0.400 0.200 0.000 0.0001 0.0002 0.0003 0.0004 0.0005 0.0006 Concentration SCN- (M) A solution with unknown [FeSCN2-] gives an absorbance of 0.190. From the information above, what is the concentration of [FeSCN2- in this solution? Previeww Show transcribed image text
A set of standard solutions with known [FeSCN2- were created and the absorbance was measured in a spectrophotometer. The following data was obtained Standard A Standard B Standard C Standard D Standard E Standard F [FeSCN2+] irn standard solution Absorbance 2.0 x 10-5 4.0 x 10-5 6.0 x 10-5 8.0 x 105 1.00x 104 4.80 x 10-4 0.043 0.087 0.125 0.173 0.211 1.050 A plot and trendline were obtained from the data and are given as: Absorbance vs Concentration 1.200 y 2193.4x 0.0036 R2 0.9999 ã000 0.800 0.600 0.400 0.200 0.000 0.0001 0.0002 0.0003 0.0004 0.0005 0.0006 Concentration SCN- (M) A solution with unknown [FeSCN2-] gives an absorbance of 0.190. From the information above, what is the concentration of [FeSCN2- in this solution? Previeww
Show transcribed image text Jean KeelingLv2
7 Apr 2019