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Author Question: When 100 mL each of 2.0 10-4 M Ag+(aq) and 2.0 10-1 M CO32-(aq) are mixed, what is the remaining ... (Read 41 times)

dalyningkenk

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on: Jul 8, 2021

Question 1

What ratio of [NH4+]/[NH3] would provide a buffer of pH low enough to avoid precipitation of Co(OH)2(s) from a 0.50 M Co2+(aq) solution? (Kb for NH3 = 1.8 × 10-5 and Ksp for Co(OH)2= 2.0 × 10-14
◦ 1/50
◦ 1/90
◦ 1/1
◦ 90/1
◦ 50/1

Question 2

When 100 mL each of 2.0 × 10-4 M Ag+(aq) and 2.0 × 10-1 M CO32-(aq) are mixed, what is the remaining Ag+(aq) ion concentration and is precipitation complete?  The solubility product constant of Ag2CO3(s) is 8.5 × 10-12.
◦ 4.2 × 10-8 M, yes
◦ 2.0 × 10-4 M, no
◦ 9.2 × 10-6 M, no
◦ 1.0 × 10-3 M, no
◦ 8.5 × 10-9 M, yes
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by dalyningkenk on Jul 8, 2021

mohan

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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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dalyningkenk

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

31809pancho

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Reply 3 on: Yesterday
Gracias!

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