The owner of a swimming pool supply company is offered what appears to be an exceptionally good deal on some concentrated muriatic acid. The solution is supposed to be 31.25% w/w HCI (FW=36.46 g/mol). The store owner has some suspicions about the seller and decides to have the sample analyzed before agreeing to make a purchase. As an analyst, you were hired to analyze the sample. You determined the density of the solution to be 1.367 g/mL. Then a 5.00-mL aliquot of the acid was diluted to 250.0 mL. A 50.0-mL aliquot of the diluted sample required 22.5 mL of 0.300 M NaOH for titration to the phenolphthalein end point. (a) What is the result of your analysis? (b) Based on this result, what should the store owner do.
The owner of a swimming pool supply company is offered what appears to be an exceptionally good deal on some concentrated muriatic acid. The solution is supposed to be 31.25% w/w HCI (FW=36.46 g/mol). The store owner has some suspicions about the seller and decides to have the sample analyzed before agreeing to make a purchase. As an analyst, you were hired to analyze the sample. You determined the density of the solution to be 1.367 g/mL. Then a 5.00-mL aliquot of the acid was diluted to 250.0 mL. A 50.0-mL aliquot of the diluted sample required 22.5 mL of 0.300 M NaOH for titration to the phenolphthalein end point. (a) What is the result of your analysis? (b) Based on this result, what should the store owner do.
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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The owner of a swimming pool supply company is offered what appears to be an exceptionally good deal on some concentrated muriatic acid. The solution is supposed to be 31.25% w/w HCI (FW=36.46 g/mol). The store owner has some suspicions about the seller and decides to have the sample analyzed before agreeing to make a purchase. As an analyst, you were hired to analyze the sample. You determined the density of the solution to be 1.367 g/mL. Then a 5.00-mL aliquot of the acid was diluted to 250.0 mL. A 50.0-mL aliquot of the diluted sample required 22.5 mL of 0.300 M NaOH for titration to the phenolphthalein end point. (a) What is the result of your analysis? (b) Based on this result, what should the store owner do.
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