**Title: Determining the Percentage by Mass of Oxalic Acid in a Sample****Introduction**Oxalic acid, a diprotic acid with the chemical formula H₂C₂O₄, is commonly used to remove rust from car radiators. Understanding the concentration of oxalic acid in a solution is essential for its effective application.**Problem Statement**In a given experiment, a sample containing oxalic acid was analyzed to determine its concentration. A sample weighing 0.2524 grams was dissolved in water and titrated using 0.0820 M NaOH. The volume of NaOH required to completely neutralize the oxalic acid was measured to be 11.72 mL. The objective is to calculate the percentage by mass of oxalic acid in the sample.**Required Calculation**To find the percentage by mass of oxalic acid in the sample, follow these steps:1. Convert the volume of NaOH used (11.72 mL) to liters.2. Calculate the moles of NaOH used, using the equation: \[ \text{Moles of NaOH} = \text{Volume in L} \times \text{Molarity of NaOH (M)} \]3. Use the stoichiometry of the reaction to find the moles of oxalic acid neutralized. Since oxalic acid is diprotic, each molecule reacts with two moles of NaOH.4. Calculate the mass of oxalic acid using its molar mass.5. Determine the percentage by mass using the formula: \[ \text{Percentage by Mass} = \left( \frac{\text{Mass of Oxalic Acid}}{\text{Sample Mass}} \right) \times 100 \]**Conclusion**With these calculations, one can determine the effectiveness of the solution preparation and ensure that the concentration of oxalic acid is sufficient for practical applications like rust removal in radiators.

Answered: Image /qna-images/answer/e82ba1ec-0150-4414-9a5c-156e4fa67369.jpg

Oxalic acid, a diprotic acid having the formula H₂C2O4, is used to clean the rust out of radiators in cars. A sample of an oxalic acid mixture was analyzed by titrating a 0.2524 g sample dissolved in water with 0.0820 M NaOH. A volume of 11.72 mL of the base was required to completely neutralize the oxalic acid. What was the percentage by mass of oxalic acid in the sample? % oxalic acid

Oxalic acid, a diprotic acid having the formula H₂C2O4, is used to clean the rust out of radiators in cars. A sample of an oxalic acid mixture was analyzed by titrating a 0.2524 g sample dissolved in water with 0.0820 M NaOH. A volume of 11.72 mL of the base was required to completely neutralize the oxalic acid. What was the percentage by mass of oxalic acid in the sample? % oxalic acid

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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