A solution contains 4.96 mM of an analyte, X, and 1.81 mM of a standard, S....
Consider a solution containing 4.69 mM of an analyte, X, and 1.22 mM of a standard, S. Upon chromatographic separation of the solution peak areas for X and S are 3793 and 10323, respectively. Determine the response factor for X relative to S. F = To determine the concentration of X in an unknown solution, 1.00 mL of 8.70 mM S was added to 3.00 mL of the unknown X solution and the mixture was diluted to 10.0 mL. After...
5-29. A solution containing 3.47 mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3 473 and 10 222, respectively, in a chromatographic analysis. Then 1.00 mL of 8.47 mM S was added to 5.00 mL of unknown X, and the mixture was diluted to 10.0 mL This solution gave peak areas of 5 428 and 4 431 for X and S respectively (a) Calculate the response factor for the analyte (b) Find the concentration of S...
A solution containing 3.47 mM X (analyte) and 1.72 mM S (Standard) gave peak areas of 3.473 and 10222, respectively, in a chromatographic analysis. Then 1mL of 8.47 mM S was added to 5mL of unknown X, and the mixture was diluted to 10mL. This solution gave a peak areas of 5,428 and 4,431 for X and S, respectively. a.) Calculate the response factor for the analyte. b.) Find the concentration of S (mM) in the 10mL mixture. c.) Find...
26. Consider a solution containing 3.28 mM of an analyte, X, and 1.17 mM of a standard, S. Upon chromatographic separation of the solution peak areas for X and S are 3853 and 10913, respectively Determine the response factor (F) for X relative to S 0 125 0 15 03532
A standard solution containing 5.6 10-8 M iodoacetone and 2.5 10-7 M p-dichlorobenzene (an internal standard) gave peak areas of 306 and 877, respectively, in a gas chromatogram. A 3.00 mL unknown solution of iodoacetone was treated with 0.100 mL of 1.0 10-5 M p-dichlorobenzene and the mixture was diluted to 10.00 mL. Gas chromatography gave peak areas of 685 and 329 for iodoacetone and p-dichlorobenzene, respectively. Find the concentration of iodoacetone in the 3.00 mL of original unknown.
in a preliminary data, a solution containing 0.0837 M "X" and 0.0666 M internal standard give peak area Ax = 423 and As = 347. To analyze unknown, 10.0 mL of 0.146 internal standard were added to 10.0 mL of unknown. The mixture was diluted to 25.0 mL in volumetric flask. Final solution gave Ax = 553 and As = 582. What is [X]i ?
A known mixture of Compound X (1.52 mg/mL) and Compound Y (1.73 mg/mL) gave peak areas of 16.02 and 9.41 cm², respectively, after separation by isocratic HPLC. A solution was prepared by mixing 8.76 mg of Compound Y with 5.00 mL of unknown containing just Compound X, and diluting to 10.00 mL. Peak areas of 5.96 cm- (Compound X) and 4.86 cm (Compound Y) were measured. Find the concentration of Compound X in the unknown.
A standard solution with a concentration of 12.5 ppm gave a fluorescence emission intensity of 5.227 x 104 counts at 457 nm. An unknown sample was diltued by placing 5 mL of the sample into a 250 mL volumetric flask and diluted to the mark. The resulting solution gave an emission intensity of 3.921 x 104 counts at 457 nm. Determine the concentration of analyte in the unknown sample in ppm.
This question applies to the separation of a solution containing pentanol (MM 88.15 g/mol) and 2,3-dimethyl-2-butanol (MM 102.17 g/mol). Pentanol is the internal standard. Separation of a standard solution containing 225 mg of pentanol and 233 mg of 2,3-dimethyl-2-butanol in 10.0 mL of solution led to a pentanol:2,3-dimethyl-2-butanol relative peak area ratio of 0.913:1.00. Calculate the response factor, F, for 2,3-dimethyl-2-butanol. F= Calculate the areas for pentanol and 2,3-dimethyl-2-butanol gas chromatogram peaks in an unknown solution. For pentanol, the peak...
This question applies to the separation of a solution containing pentanol (MM 88.15 g/mol) and 2,3-dimethyl-2-butanol (MM 102.17 g/mol). Pentanol is the internal standard. Separation of a standard solution containing 211 mg of pentanol and 255 mg of 2,3-dimethyl-2-butanol in 10.0 mL of solution led to a pentanol:2,3-dimethyl-2-butanol relative peak area ratio of 0.889:1.00. Calculate the response factor, F. for 2,3-dimethyl-2-butanol. F- Calculate the areas for pentanol and 2.3-dimethyl-2-butanol gas chromatogram peaks in an unknown solution. For pentanol, the peak...