From the list of acid-base indicators below, select the one BEST indicator for a titration with an equivalence point at pH 4.0 (BE CAREFUL-enter indicator name EXACTLY as it appears in table): Indicator pKa Acid color Base color Methyl violet Cresol red Malachite green Thymol blue Phloxine Orange IV Benzopurpurin Methyl yellow Methyl orange Bromophenol blue Congo red Dinitrophenol Alpha-Naphthyl red Bromocresol green Methyl red Ethyl red Azolitmin (litmus) Bromocresol purple Bromothymol blue Nitrophenol Phenol red Thymol blue Phenolphthalein Alizarin yellow R Blue Yellow Blue-green Yellow Pink 0.80 Yellow 1.0 1.3 Red Yellow Red 1.7 1.8 Colorless 2.1 Red Yellow 2.8 Violet Red 3.3 3.7 4.0 4.1 4.1 4.3 Red Yellow Red Yellow Blue-violet Yellow Blue Red Yellow Yellow Blue Yellow Colorless Red 4.7 Yellow Red Colorless 5.1 5.4 5.8 6.3 red Red Yellow Yellow Colorless Yellow Yellow Colorless Yellow Blue Violet 7.0 7.2 7.9 Blue Yellow Red blue 8.9 9.4 11.0 Red red

From the list of acid-base indicators below, select the one BEST indicator for a titration with an equivalence point at pH 4.0 (BE CAREFUL-enter indicator name EXACTLY as it appears in table): Indicator pKa Acid color Base color Methyl violet Cresol red Malachite green Thymol blue Phloxine Orange IV Benzopurpurin Methyl yellow Methyl orange Bromophenol blue Congo red Dinitrophenol Alpha-Naphthyl red Bromocresol green Methyl red Ethyl red Azolitmin (litmus) Bromocresol purple Bromothymol blue Nitrophenol Phenol red Thymol blue Phenolphthalein Alizarin yellow R Blue Yellow Blue-green Yellow Pink 0.80 Yellow 1.0 1.3 Red Yellow Red 1.7 1.8 Colorless 2.1 Red Yellow 2.8 Violet Red 3.3 3.7 4.0 4.1 4.1 4.3 Red Yellow Red Yellow Blue-violet Yellow Blue Red Yellow Yellow Blue Yellow Colorless Red 4.7 Yellow Red Colorless 5.1 5.4 5.8 6.3 red Red Yellow Yellow Colorless Yellow Yellow Colorless Yellow Blue Violet 7.0 7.2 7.9 Blue Yellow Red blue 8.9 9.4 11.0 Red red

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 37QAP: Given three acid-base indicatorsâ€”methyl orange (end point at pH 4), bromthymol blue (end point at...

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Using Figure 17.11, suggest an indicator to use in each of the following titrations: (a) The weak base pyridine is titrated with HCl. (b) Formic acid is titrated with NaOH. (c) Ethylenediamine, a weak diprotic base, is titrated with HCl. Figure 17.11 Common acid-base indicators. The color changes occur over a range of pH values. Notice that o few indicators hove color changes over two different pH ranges.
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I have contacted Bartleby customer support and they said this question is valid to be asked! They have said if someone denys again, i can contact them back and they will know who has declined and have a talk with them! Dont cause any issues! Use acid-base titration to determine theconcentration of:– A weak acid: CH3COOH 0.100 M NaOH (standardized)•0.100 M HCl0.100 M CH3COOH Phenolphthalein is used for endpoint determination– Changes from colourless to pink as a solution becomes more basic• Only need 2-3 drops per titration• pH range: 8.3-10
Consider the following indicators: dinitrophenol (pKIn = 3.5), bromothymol blue (pKIn = 7), thymolphthalein (pKIn = 10). Match each titration below with its most-likely best indicator. (A specific indicator choice may be used more than once.) Group of answer choices titration of HF with NaOH [ Choose ] dinitrophenol bromothymol blue thymolphthalein titration of RbOH with HNO3 [ Choose ] dinitrophenol bromothymol blue thymolphthalein titration of HI with KOH [ Choose ] dinitrophenol bromothymol blue thymolphthalein titration of NH3 with HBr [ Choose ] dinitrophenol bromothymol blue thymolphthalein
please stop rejecting. we pay for this service, so we deserve getting our answer! I do not want to have to put a claim in and report Use acid-base titration to determine theconcentration of:– A strong acid: HCl 0.100 M NaOH (standardized)•0.100 M HCl0.100 M CH3COOH Phenolphthalein is used for endpoint determination– Changes from colourless to pink as a solution becomes more basic• Only need 2-3 drops per titration• pH range: 8.3-10
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