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Author Question: Consider the following indicators and their pH ranges:Methyl orange3.2-4.4Methyl ... (Read 34 times)

audragclark

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on: Mar 21, 2021
Consider the following indicators and their pH ranges:
Methyl orange
3.2-4.4
Methyl red
4.8-6.0
Bromothymol blue
6.0-7.6
Phenolphthalein
8.2-10.0
Alizarin yellow
10.1-12.0
Assume an indicator works best when the equivalence point of a titration comes in the middle of the indicator range. For which of the following titrations would methyl red be the best indicator?


◦ 0.100 M HNO3 + 0.100 M KOH
◦ 0.100 M aniline (Kb = 3.8 × 10–10) + 0.100 M HCl
◦ 0.100 M NH3 (Kb = 1.8 × 10–5) + 0.100 M HCl
◦ 0.100 M HF (Ka = 7.2 × 10–4) + 0.100 M NaOH
◦ 0.100 M acetic acid (Ka = 1.8 × 10–5) + 0.100 M NaOH
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by audragclark on Mar 21, 2021

patma1981

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Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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audragclark

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Reply 2 on: Mar 21, 2021
Excellent

Perkypinki

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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