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: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.103QE: A bottle of concentrated hydroiodic acid is 57% HI by weight and has a density of 1.70 g/mL. A...
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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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