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At 580nm, the wavelength of its maximum absorption, a 3.75 x10^-5 M solution of the complex FeSCN2+ has an absorbance of 0.2734 in a 1.00cm cell. what will be the absorbance of a solution in a 2.0 cm cell with concentraion 1.25* 10-5 concentration

At 580nm, the wavelength of its maximum absorption, a 3.75 x10^-5 M solution of the complex FeSCN2+ has an absorbance of 0.2734 in a 1.00cm cell. what will be the absorbance of a solution in a 2.0 cm cell with concentraion 1.25* 10-5 concentration

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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At 580nm, the wavelength of its maximum absorption, a 3.75 x10^-5 M solution of the complex FeSCN2+ has an absorbance of 0.2734 in a 1.00cm cell. what will be the absorbance of a solution in a 2.0 cm cell with concentraion 1.25* 10-5 concentration

Chemistry exam 3.12.2020.docx (Compatibility Mode) - Word Review View Help O Tell me what you want to do 三,三. 外T AaBbCcDd AaBbCcDd AaBbC AaBbCc AaB AaBbCcD AaB = == - T Normal 1 No Spac. Heading 1 Heading 2 Title Subtitle Subtl Paragraph Styles 1 2 3 4 5 6 7.8 8 9 10 11 12 13. 14. 15 4. Oxidation of cellulose (CH10OS)6 +6n02 6nCO, +5nH;0 has a high negative free energy. Why is it that newspaper, with very high cellulose content, does not turn into CO, and H20 while you are reading? 5. Two weak acids A and 8 have pka values 4 and 6 respectively. Which of the fallowing statements is true: (a) Acid A dissociates to a greater extent in water than acid B (b) For solutions of equal concentrations, acid B will have a lower pH (c) B is the conjugate base of A. Explain your answer, i.e. why you chose a particular option. At 580 nm, which is the wavelength of its maximum absorption, the complex FelSCN has a molar absorptivity of 7.00x10 Lcm mol. Calculate 6. (a) the absorbance of a 2.50x1o* M solution of the complex at 580 nm in a 1.00-cm cell (b) the absorbance of a solution in a 2.00 cm cell in which the concentration of the complex is one half that in (a). (c) the percent transmittance of the solutions described in (a) and (b). (d) the absorbance of a solution that has half the transmittance of that described in (a). 7. Which of these molecules have a permanent dipole moment: H20, CO, CH4, Na CO, NH? 8. Ethanol (CH;OH) and methyl ether (CH;OCH1) have the same molar mass. Which should |
Transcribed Image Text:Chemistry exam 3.12.2020.docx (Compatibility Mode) - Word Review View Help O Tell me what you want to do 三,三. 外T AaBbCcDd AaBbCcDd AaBbC AaBbCc AaB AaBbCcD AaB = == - T Normal 1 No Spac. Heading 1 Heading 2 Title Subtitle Subtl Paragraph Styles 1 2 3 4 5 6 7.8 8 9 10 11 12 13. 14. 15 4. Oxidation of cellulose (CH10OS)6 +6n02 6nCO, +5nH;0 has a high negative free energy. Why is it that newspaper, with very high cellulose content, does not turn into CO, and H20 while you are reading? 5. Two weak acids A and 8 have pka values 4 and 6 respectively. Which of the fallowing statements is true: (a) Acid A dissociates to a greater extent in water than acid B (b) For solutions of equal concentrations, acid B will have a lower pH (c) B is the conjugate base of A. Explain your answer, i.e. why you chose a particular option. At 580 nm, which is the wavelength of its maximum absorption, the complex FelSCN has a molar absorptivity of 7.00x10 Lcm mol. Calculate 6. (a) the absorbance of a 2.50x1o* M solution of the complex at 580 nm in a 1.00-cm cell (b) the absorbance of a solution in a 2.00 cm cell in which the concentration of the complex is one half that in (a). (c) the percent transmittance of the solutions described in (a) and (b). (d) the absorbance of a solution that has half the transmittance of that described in (a). 7. Which of these molecules have a permanent dipole moment: H20, CO, CH4, Na CO, NH? 8. Ethanol (CH;OH) and methyl ether (CH;OCH1) have the same molar mass. Which should |
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