8:34ul LTE O1 FilesThis account does not allow editing on yourSign indevice. For an account with full acces...moresolutions), and pink at pH values above 9 (i.e. basic solutions). We expect that the endpoint is very closeto the equivalence point, so we treat it as the equivalence point in our calculations.Page | 1Lab 14: Acid-Base TitrationOxnard CollegeVideo of the endpoint in a phenolphthalein acid-base titration:https://youtu.be/ukSR 2D 7UgIn acidic solutionIn basic solutionequivalence pointPre-Lab AssignmentFor questions 1-4 below, 20.0 mL of a hydrofluoric acid (HF) of unknown concentration0.121 M potassium hydroxide (KOH).titrated with1. In the diagram below, mark where the HF, the KOH, and the indicator would be found.2. Write a balanced chemical equation to show the neutralization of HF with KOH. (Include phases.)3. What color is phenolphthalein in acidic solutions?What color is phenolphthalein in basic solutions?What color is phenolphthalein before the titration in #1?What colorphenolphthalein at the endpoint in #1?4. If the endpoint of the titration is reached after the addition of 13.42 mL of 0.121 M KOH, what is theconcentration of the original 20.00 mL HF solution? (Show work!)Page | 2Lab 14: Acid-Base TitrationOxnard CollegeProcedurePart 1. Preparation and Standardization of a NaOH solution.1. Navigate to the following video that describes how to set up a burette.https://youtu.be/P9mj0INwfwY 8:34ul LTE C1 FilesLab+14+Acid-Base+TitrationThis account does not allow editing on your(x)Sign indevice. For an account with full acces...moreLab 14: Acid-Base TitrationOxnard CollegeData Analysis:Part 1. Standardization of NaOH Solution1. After you have coated the inside of the burette with a few milliliters of the titrant, what should you dowith those few milliliters of the titrant?2. Is the stopcock perpendicular to or parallel to the burette barrel when it is closed?3. To what place should a burette be read? (i.e. ones place, tenths place, hundredths place)4. Complete Data Table 1. The neutralization reaction between KHP and NaOH is:Data Table 1a. Standardization of NaOH solutionTrial 1Trial 2Trial 3Volume of 0.500 MКНР, mLBurette readingbefore titration, mLBurette reading aftertitration, mLVolume of NaOHsolution added, mLData Table 1b.Mole of KHPConcentration ofNaOH, MAverage NaOHconcentration, MShow work for Data Table 1a below. Work for Data Table 1b shown in Post-Lab QuestionsPagLab 14: Acid-Base TitrationOxnard CollegePost-Laboratory Questions1. Calculate the number of moles of KHP present in the flask before the titration.

In acid base titration the given data is Acid = Hydrofluoric acid HF Base = potassium hydroxide…

Answered: Pre-Lab Assignment

Science

Chemistry

Pre-Lab Assignment

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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