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Author Question: If an aqueous solution is prepared by dissolving 1.6 mol Na2CrO4 in 1.0 L of a buffer at pH 8.24, ... (Read 123 times)

jman1234

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on: Jul 8, 2021

Question 1

How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg) of iron ore if the ore is 5.03% iron?

Fe2O3(s) + 3 CO(g) → 2 Fe(l) + 3 CO2(g)

◦ 151 kg
◦ 75.7 kg
◦ 25.2 kg
◦ 40.7 kg
◦ 50.5 kg

Question 2

If an aqueous solution is prepared by dissolving 1.6 mol Na2CrO4 in 1.0 L of a buffer at pH 8.24, what will be [Cr2O72-] in the solution? The resultant equilibria are:

HCrO4-(aq) H+(aq) + CrO42-(aq)  Ka = 3.2 × 10-7
 2 HCrO4-(aq) Cr2O72-(aq)+ H2O(l) K = 33

◦ 9.9 × 10-5 M
◦ 2.9 × 10-28 M
◦ 8.9 × 10-9 M
◦ 8.6 × 102 M
◦ 2.8 × 10-2 M
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by jman1234 on Jul 8, 2021

Joc

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Reply #1 on: Jul 8, 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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jman1234

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Reply 2 on: Jul 8, 2021
Great answer, keep it coming :)

carojassy25

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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