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For your titration, it took 17.91 mL of unknown NaOH to react with 0.223 g of KHP. What is the molarity of the NaOH?

For your titration, it took 17.91 mL of unknown NaOH to react with 0.223 g of KHP. What is the molarity of the NaOH?

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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**Titration Problem** For your titration, it took 17.91 mL of unknown NaOH to react with 0.223 g of KHP. What is the molarity of the NaOH? **Explanation:** In this problem, you are tasked with finding the molarity of an unknown NaOH solution using the known mass of KHP (Potassium Hydrogen Phthalate, a common primary standard in titrations). By using the volume of NaOH solution required to react completely with KHP, you can determine the molarity (M) of the NaOH solution. **Calculation Steps:** 1. **Determine the moles of KHP:** - The molar mass of KHP is approximately 204.22 g/mol. - Moles of KHP = mass (g) / molar mass (g/mol) 2. **Use the stoichiometry of the reaction:** - The reaction ratio between NaOH and KHP is 1:1. - Therefore, moles of NaOH = moles of KHP. 3. **Calculate the molarity of NaOH:** - Molarity (M) = moles of NaOH / volume of NaOH (L) - Note: Convert volume from mL to L by dividing by 1000. Apply these steps to solve the problem and find the molarity of the NaOH solution.
Transcribed Image Text:**Titration Problem** For your titration, it took 17.91 mL of unknown NaOH to react with 0.223 g of KHP. What is the molarity of the NaOH? **Explanation:** In this problem, you are tasked with finding the molarity of an unknown NaOH solution using the known mass of KHP (Potassium Hydrogen Phthalate, a common primary standard in titrations). By using the volume of NaOH solution required to react completely with KHP, you can determine the molarity (M) of the NaOH solution. **Calculation Steps:** 1. **Determine the moles of KHP:** - The molar mass of KHP is approximately 204.22 g/mol. - Moles of KHP = mass (g) / molar mass (g/mol) 2. **Use the stoichiometry of the reaction:** - The reaction ratio between NaOH and KHP is 1:1. - Therefore, moles of NaOH = moles of KHP. 3. **Calculate the molarity of NaOH:** - Molarity (M) = moles of NaOH / volume of NaOH (L) - Note: Convert volume from mL to L by dividing by 1000. Apply these steps to solve the problem and find the molarity of the NaOH solution.
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