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1. You measured out 1.4315g of oxalic acid dihydrate and dissolved it into a 100.00mL volumetric flask. Calculate the concentration of the oxalic acid.

1. You measured out 1.4315g of oxalic acid dihydrate and dissolved it into a 100.00mL volumetric flask. Calculate the concentration of the oxalic acid.

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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1. You measured out 1.4315g of oxalic acid dihydrate and dissolved it into a 100.00mL volumetric flask. Calculate the concentration of the oxalic acid. You collect the following data by using 20.00 mL of acid per titration: Initial buret reading (mL) Final buret reading (mL) NaOH added (mL) 0.01 12.45 0.00 15.04 12.45 25.67 25.67 38.56 2. Complete the last column. Which titrations are valid? Why? 3. Calculate the molarity of the sodium hydroxide solution based on each run separately, showing all work. DO NOT USE M,VA-- that will be zero points! 4. Calculate the error in parts per thousand for the 3 runs within 0.5mL of NaOH delivered. 5. Calculate the molarity of citric acid (H,C,H,O,) if 10.0mL of citric acid are neutralized by 43.15ml of the base in problem 1 (use the average base concentration). 6. You collect the following mass data in the lab for the citric acid item Mass (g) Empty 25.00 mL flask 89.4141g Filled 25.00 mL flask 115.9870g Calculate the density of the citric acid solution, showing all work. 7. Use the molarity and the density of the acid to find the percent acid.
Transcribed Image Text:1. You measured out 1.4315g of oxalic acid dihydrate and dissolved it into a 100.00mL volumetric flask. Calculate the concentration of the oxalic acid. You collect the following data by using 20.00 mL of acid per titration: Initial buret reading (mL) Final buret reading (mL) NaOH added (mL) 0.01 12.45 0.00 15.04 12.45 25.67 25.67 38.56 2. Complete the last column. Which titrations are valid? Why? 3. Calculate the molarity of the sodium hydroxide solution based on each run separately, showing all work. DO NOT USE M,VA-- that will be zero points! 4. Calculate the error in parts per thousand for the 3 runs within 0.5mL of NaOH delivered. 5. Calculate the molarity of citric acid (H,C,H,O,) if 10.0mL of citric acid are neutralized by 43.15ml of the base in problem 1 (use the average base concentration). 6. You collect the following mass data in the lab for the citric acid item Mass (g) Empty 25.00 mL flask 89.4141g Filled 25.00 mL flask 115.9870g Calculate the density of the citric acid solution, showing all work. 7. Use the molarity and the density of the acid to find the percent acid.
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