A 5.00 mL sample of brandy was diluted to 1.00 L in a volumetric flask. The ethanol in 25.00 mL aliquot of the diluted solution was distilled into 50.0 mL of 0.02000 M K2Cr2O7 and oxidized to acetic acid with heating. 3C2H5OH + 2Cr2O7 2- + 16 H+ → 4 Cr3+ + 3CH3COOH + 11 H2O After cooling, 20.00 mL of 0.1253 M Fe3+ was pipetted into the flask. The excess Fe2+ was then titrated with 7.46 mL of standard K2Cr2O7 to a diphenylamine sulfonic acid endpoint. Calculate the percent (w/v) ethanol (MW 46.07 g/mol) in the brandy.
A 5.00 mL sample of brandy was diluted to 1.00 L in a volumetric flask. The ethanol in 25.00 mL aliquot of the diluted solution was distilled into 50.0 mL of 0.02000 M K2Cr2O7 and oxidized to acetic acid with heating. 3C2H5OH + 2Cr2O7 2- + 16 H+ → 4 Cr3+ + 3CH3COOH + 11 H2O After cooling, 20.00 mL of 0.1253 M Fe3+ was pipetted into the flask. The excess Fe2+ was then titrated with 7.46 mL of standard K2Cr2O7 to a diphenylamine sulfonic acid endpoint. Calculate the percent (w/v) ethanol (MW 46.07 g/mol) in the brandy.
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...
Related questions
Question
A 5.00 mL sample of brandy was diluted to 1.00 L in a volumetric
flask. The ethanol in 25.00 mL aliquot of the diluted solution was
distilled into 50.0 mL of 0.02000 M K2Cr2O7
and oxidized to acetic
acid with heating.
3C2H5OH + 2Cr2O7
2- + 16 H+ → 4 Cr3+ + 3CH3COOH + 11 H2O
After cooling, 20.00 mL of 0.1253 M Fe3+ was pipetted into the
flask. The excess Fe2+ was then titrated with 7.46 mL of standard
K2Cr2O7
to a diphenylamine sulfonic acid endpoint. Calculate the
percent (w/v) ethanol (MW 46.07 g/mol) in the brandy.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY