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% HCI by weight. The store owner has some suspicions about the seller and decides to have a sample analyzed before agreeing to make a purchase. You were hired to analyze the sample. You determined the density of the solution to be 1.367 g/mL. Then a 5.000- mL aliquot of the acid was diluted to 250.0 mL. A 50.00-mL aliquot of the diluted sample required 22.50 mL of 0.3000 M NaOH for titration to the phenolphthalein end point. (a) What is the weight percent HCI (FW-36.46 g/mol) in the original sample? (b) Based on the 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% HCI by weight. The store owner has some suspicions about the seller and decides to have a sample analyzed before agreeing to make a purchase. You were hired to analyze the sample. You determined the density of the solution to be 1.367 g/mL. Then a 5.000- mL aliquot of the acid was diluted to 250.0 mL. A 50.00-mL aliquot of the diluted sample required 22.50 mL of 0.3000 M NaOH for titration to the phenolphthalein end point. (a) What is the weight percent HCI (FW-36.46 g/mol) in the original sample? (b) Based on the 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% HCI by weight.
The store owner has some suspicions about the seller and decides to have a sample analyzed before agreeing to make a purchase.
You were hired to analyze the sample.
You determined the density of the solution to be 1.367 g/mL. Then a 5.000- mL aliquot of the acid was diluted to 250.0 mL. A 50.00-mL aliquot of the diluted sample required 22.50 mL of 0.3000 M NaOH for titration to the phenolphthalein end point.
(a) What is the weight percent HCI (FW-36.46 g/mol) in the original sample?
(b) Based on the result, what should the store owner do?
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