Evaluate the concentration of manganese in the original

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Reference no: EM13560835

The content of manganese in steel was found using atomic absorption and the method of standard additions. A standard solution of manganese containing 95.5 ppm Mn was prepared for the analysis. The steel sample was dissolved in dilute nitric acid, placed in a volumetric flask, and diluted to 100.0 mL. When this sample was introduced into the spectrophotometer, the light absorbed was indicated by an absorbance of 0.185. A second sample for analysis was prepared by pipeting 5.00 mL of the standard Mn solution and 50.0 mL of the steel sample into a 100.0 mL volumetric flask and diluting to 100.0 mL. The light absorbed by this sample was indicated by an absorbance of 0.248. Calculate the concentration of manganese in the original 100.0 mL of the dissolved steel.

Reference no: EM13560835

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