For the given data, weight percentage of manganese is to be determined, where Mn to Ba count ratio is 0.936 considering barium as internal standard. Concept introduction: Weight percentage of Mn is calculated by plotting the graph between ratio of fluorescence intensity and weight percentage of Mn. The values used for this graph will be obtained by using a spreadsheet for the given data and calculation between cells of spreadsheet. Unknown quantities and required quantities are obtained by the calculation which will be done between cells of spreadsheet.

Question

Quinine in a 1.939-g tablet was to be analyzed by dissolving it with 0.10 M HCl to a final volume of exactly 500 mL. This solution was diluted by adding 50.00 mL to a 100.0 mL flask and diluting to the mark. Afterwards the fluorescence intensity was found to be 394 in arbitrary units. Under identical experimental conditions, a standard 150.0-ppm had an intensity of 184.Quinine in a 1.939-g tablet was to be analyzed by dissolving it with 0.10 M HCl to a final volume of exactly 500 mL. This solution was diluted by adding 50.00 mL to a 100.0 mL flask and diluting to the mark. Afterwards the fluorescence intensity was found to be 394 in arbitrary units. Under identical experimental conditions, a standard 150.0-ppm had an intensity of 184. Calculate the number of milligrams in the original sample.

Answer 1

Question

Chapter 12, Problem 12.12QAP

Interpretation Introduction

Interpretation:

For the given data, weight percentage of manganese is to be determined, where Mn to Ba count ratio is 0.936 considering barium as internal standard.

Concept introduction:

Weight percentage of Mn is calculated by plotting the graph between ratio of fluorescence intensity and weight percentage of Mn. The values used for this graph will be obtained by using a spreadsheet for the given data and calculation between cells of spreadsheet. Unknown quantities and required quantities are obtained by the calculation which will be done between cells of spreadsheet.

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Quinine in a 1.939-g tablet was to be analyzed by dissolving it with 0.10 M HCl to a final volume of exactly 500 mL. This solution was diluted by adding 50.00 mL to a 100.0 mL flask and diluting to the mark. Afterwards the fluorescence intensity was found to be 394 in arbitrary units. Under identical experimental conditions, a standard 150.0-ppm had an intensity of 184.Quinine in a 1.939-g tablet was to be analyzed by dissolving it with 0.10 M HCl to a final volume of exactly 500 mL. This solution was diluted by adding 50.00 mL to a 100.0 mL flask and diluting to the mark. Afterwards the fluorescence intensity was found to be 394 in arbitrary units. Under identical experimental conditions, a standard 150.0-ppm had an intensity of 184. Calculate the number of milligrams in the original sample.

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