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1) Most sugars can act as reducing agents. Could the dichromate reaction shown in equation (1) be used to determine the alcohol concentration in beer? Why or why not?

1) Most sugars can act as reducing agents. Could the dichromate reaction shown in equation (1) be used to determine the alcohol concentration in beer? Why or why not?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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                                                                   AgNO3

     2 K2Cr2O7 + 8 H2SO4 + 3 CH3CH2OH     →      2 Cr2(SO4)3 + 2 K2SO4 + 3 CH3COOH + 11 H2O

### Educational Transcription #### Question 1 Most sugars can act as reducing agents. Could the dichromate reaction shown in equation (1) be used to determine the alcohol concentration in beer? Why or why not? #### Question 2 If an ethanol solution with a concentration of 0.435M is reacted with dichromate as in equation (1) and the resulting solution has an absorbance of 0.85 at 580nm, estimate the value of the constant, \( K \), in equation (2). Be sure to include units. #### Question 3 What would be the concentration of the solution in question 2 expressed in units of g/dl? The molecular weight of ethanol is 46g/mol. #### Question 4 If the path length (see the Spectroscopy and Concentration Reference Sheet) was doubled, would the absorbance be doubled or halved? --- This set of questions is designed to deepen your understanding of chemical reactions, spectroscopy, and concentration calculations. By addressing real-world applications such as alcohol concentration determination in beer, you will explore the behavior of solutions and the analytical techniques used to measure them.
Transcribed Image Text:### Educational Transcription #### Question 1 Most sugars can act as reducing agents. Could the dichromate reaction shown in equation (1) be used to determine the alcohol concentration in beer? Why or why not? #### Question 2 If an ethanol solution with a concentration of 0.435M is reacted with dichromate as in equation (1) and the resulting solution has an absorbance of 0.85 at 580nm, estimate the value of the constant, \( K \), in equation (2). Be sure to include units. #### Question 3 What would be the concentration of the solution in question 2 expressed in units of g/dl? The molecular weight of ethanol is 46g/mol. #### Question 4 If the path length (see the Spectroscopy and Concentration Reference Sheet) was doubled, would the absorbance be doubled or halved? --- This set of questions is designed to deepen your understanding of chemical reactions, spectroscopy, and concentration calculations. By addressing real-world applications such as alcohol concentration determination in beer, you will explore the behavior of solutions and the analytical techniques used to measure them.
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