Given the pH chart of different acid-base indicators, which indicator is appropriate for dimethylamine – HCl titration? Methyl orange OBromthymol blue Ophenolphthalein OAlizarin yellow 14 13 12 111 10 9 8 6. 2 0f What is the color of the solution at the end- point? Olight orange Ogreen Olight pink Ored orange Hd Methyl violet Thymol blue Methyl yellow Bromphenol blue Methyl orange Methyl red snunI Bromthymol blue Phenol red Phenolphthalein Thymolphthalein TIII Alizarin yellow

Given the pH chart of different acid-base indicators, which indicator is appropriate for dimethylamine – HCl titration? Methyl orange OBromthymol blue Ophenolphthalein OAlizarin yellow 14 13 12 111 10 9 8 6. 2 0f What is the color of the solution at the end- point? Olight orange Ogreen Olight pink Ored orange Hd Methyl violet Thymol blue Methyl yellow Bromphenol blue Methyl orange Methyl red snunI Bromthymol blue Phenol red Phenolphthalein Thymolphthalein TIII Alizarin yellow

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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Regarding titrations, which of the following is TRUE? A plot of pH vs. the [base]/[acid] ratio is known as a titration curve. The equivalence point is when the moles of base equals the moles of acid during any acid–base titration. Indicators do not respond to changes in pH. The pH is always 7 once the equivalence volume has been delivered. None of the answers are true.
Titration Curve Using the table of indicators identify which of the given 13 12 indicators would be appropriate for the titration 11 10 represented in the titration curve. 9 thymol blue 8 pH 7 6 alizarin yellow R 5 O quinaldine red 4 3 O clayton yellow 2 1 metacresol purple 4 6 8 10 12 14 16 18 20 Volume of Titrant (mL) O methyl green 2.
An aqueous solution of an unknown solid salt was placed into five different test tubes. Into each test tube a couple of drops of different indicators were then added to each test tube and the color of the indicator in the solution was recorded as shown below. What is the approximate pH of the solution? Test pH Acid Base Color in Unknown Indicator tube Range Color Color Solution 3.0 - 1 Methyl orange 4.4 Red Yellow Yellow 3.0 - Congo Red Purple Red Red 5.0 Bromcresol 3.8 - Yellow Blue Blue Green 5.4 Bromthymol 6.0 - 7.6 4 Yellow Blue Yellow Blue 8.2 - Phenolphthalein Colorless Blue Colorless 10.0 4.3 O 8.4 O 5.2 6.7
The indicator thymol blue has two color transitions as indicated in the table. Thymol Blue Indicator Colors Acid color pH Transition range Base color red 1.2-2.8 yellow yellow 8.0-9.6 blue Select the color expected when thymol blue is added to solutions having the given pH values. pH 1 pH 2 orange O yellow O green orange O yellow blue red green O blue O red pH 6 pH 10
Which of the following titrations result in an acidic solution at the equivalence point? NH 3 titrated with HCl CH 3COOH titrated with KOH LiF titrated with KOH HI titrated with LiOH
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Titration A HCl Titrated with NaOH Volume of NaOH pH 0.0 1.00 5.0 1.18 10.0 1.37 15.0 1.60 20.0 1.95 21.0 2.06 22.0 2.19 23.0 2.38 24.0 2.69 25.0 7.00 26.0 11.29 27.0 11.58 28.0 11.76 29.0 11.87 30.0 11.96 35.0 12.22 40.0 12.36 45.0 12.46 50.0 12.52 Titration B HC2H3O2 Titrated with NaOH Volume of NaOH pH 0.0 2.87 5.0 4.14 10.0 4.56 15.0 4.92 20.0 5.34 21.0 5.46 22.0 5.61 23.0 5.80 24.0 6.12 25.0 8.87 26.0 11.30 27.0 11.56 28.0 11.75 29.0 11.87 30.0 11.96 35.0 12.22 40.0 12.36 45.0 12.46 50.0 12.52 1. Titration A, endpoint pH = Titration B, endpoint pH = 2. pKa or pKb = 3. Ka or…
titration of acetic acid: what is the pH after 10.00mL sodium hydroxide solution are added? the mL base needed to reach equivalence point: 25.5 mL
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