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Author Question: The concentration of an aqueous solution of Fe2+ can be determined by a redox titration with aqueous ... (Read 173 times)

nummyann

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on: Feb 15, 2020



The concentration of an aqueous solution of Fe2+ can be determined by a redox titration with aqueous bromate ion, BrO3⁻:

6 Fe2+ (aq) + BrO3⁻ (aq) + 6 H⁺ (aq) → 6 Fe3+ (aq) + Br⁻ (aq) + 3 H2O (l)


Assume that the black spheres in the buret represent BrO3⁻ ions, the gray spheres in the flask represent Fe2+ ions, the concentration of the BrO3⁻ ions in the buret is 0.120 M, and the volumes in the buret and the flask are identical. What is the concentration of the Fe2+ in the flask, and what fraction of the BrO3⁻ solution in the buret must be added to the flask to react with all the Fe2+ ions?
◦ 0.0400 M Fe2+; 1/18 of the BrO3⁻ must be added.
◦ 0.0200 M Fe2+; 1/3 of the BrO3⁻ must be added.
◦ 0.0200 M Fe2+; 1/18 of the BrO3⁻ must be added.
◦ 0.0400 M Fe2+; 1/3 of the BrO3⁻ must be added.
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Marked as best answer by nummyann on Feb 15, 2020

janeli

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Reply #1 on: Feb 15, 2020
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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nummyann

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Reply 2 on: Feb 15, 2020
YES! Correct, THANKS for helping me on my review

frankwu0507

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Reply 3 on: Yesterday
Excellent

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