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1. In part one if you allow your titration to go affect will that have on your calculated mo than/lower than/the same as the actual mol mc

1. In part one if you allow your titration to go affect will that have on your calculated mo than/lower than/the same as the actual mol mc

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 51P
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1. In part one if you allow your titration to go beyond a faint pink endpoint and it ends up dark pink, what affect will that have on your calculated molarity of NaOH? Would you calculate a molarity that is higher than/lower than/the same as the actual molarity? Explain your reasoning.
Transcribed Image Text:1. In part one if you allow your titration to go beyond a faint pink endpoint and it ends up dark pink, what affect will that have on your calculated molarity of NaOH? Would you calculate a molarity that is higher than/lower than/the same as the actual molarity? Explain your reasoning.
Objective: In this simple titration, you will learn the procedure and calculations involved in titrations. You will react a solution of NaOH with a standard acid KHP. You will then use the calculated (standardized) concentration of NaOH to calculate the concentration of an HCI solution. Concepts: Titrations Data Table: Titration Data Part 1: Use the molar mass of KHP to calculate moles of KHP reacted. Use stoichiometry to determine moles of NaOH reacted. Divide moles NaOH by volume used to get molarity (mol/L). Average the molarity for all trials. Mass of KHP Initial Burette Reading Final Burette Reading Moles KHP Used Moles NaOH Used Molarity NaOH Average Molarity of NaOH Trial 1 0.49 0.88 21.25 Introduction to Titrations Data Sheet Net Volume 1.25 -0.88 16.25-0.92 NaOH 15.33 =20.37 Mass of kw Moles of Text P 0.0024 = 0.00 24 Males NAOld Net volume 0.1178 Trial 2 + 0.37 0.92 16.25 حممه 0.0018 to Titrations 0.0018 0.1171 0.1137 mol/L Trial 3 0.45 14.25 34.38 34.38 -16.45 = 18.13 20024 0.0022 0.0022 0.1213 + Trial 4 0.31 19.72 35.7 35.7-19.72 - 15.98 00024 0.0015 0.0015 0.09387 Trial 5 0.44 1.15 19.72 19.72-1-15 -18.57 0-0024 0.0022 douzz 0-1185
Transcribed Image Text:Objective: In this simple titration, you will learn the procedure and calculations involved in titrations. You will react a solution of NaOH with a standard acid KHP. You will then use the calculated (standardized) concentration of NaOH to calculate the concentration of an HCI solution. Concepts: Titrations Data Table: Titration Data Part 1: Use the molar mass of KHP to calculate moles of KHP reacted. Use stoichiometry to determine moles of NaOH reacted. Divide moles NaOH by volume used to get molarity (mol/L). Average the molarity for all trials. Mass of KHP Initial Burette Reading Final Burette Reading Moles KHP Used Moles NaOH Used Molarity NaOH Average Molarity of NaOH Trial 1 0.49 0.88 21.25 Introduction to Titrations Data Sheet Net Volume 1.25 -0.88 16.25-0.92 NaOH 15.33 =20.37 Mass of kw Moles of Text P 0.0024 = 0.00 24 Males NAOld Net volume 0.1178 Trial 2 + 0.37 0.92 16.25 حممه 0.0018 to Titrations 0.0018 0.1171 0.1137 mol/L Trial 3 0.45 14.25 34.38 34.38 -16.45 = 18.13 20024 0.0022 0.0022 0.1213 + Trial 4 0.31 19.72 35.7 35.7-19.72 - 15.98 00024 0.0015 0.0015 0.09387 Trial 5 0.44 1.15 19.72 19.72-1-15 -18.57 0-0024 0.0022 douzz 0-1185
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