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Author Question: How many moles of CaF2 will dissolve in 3.0 liters of 0.036 M NaF solution? (Ksp for CaF2 = 4.0 1011) (Read 123 times)

s.tung

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on: Mar 21, 2021

Question 1

How many moles of Ca(NO3)2must be added to 1.0 L of a 0.255 M KF solution to begin precipitation of CaF2? Kspof CaF2 = 4.0 × 10–11

◦ 3.1 × 10–10
◦ 1.6 × 10–10
◦ 2.6 × 10–12
◦ 6.2 × 10–10
◦ 2.5 × 10–5

Question 2

How many moles of CaF2 will dissolve in 3.0 liters of 0.036 M NaF solution? (Ksp for CaF2 = 4.0 × 10–11)

◦ 3.1 × 10–8
◦ 3.7 × 10–10
◦ 9.3 × 10–8
◦ 1.0 × 10–8
◦ None of these are correct.
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Marked as best answer by s.tung on Mar 21, 2021

jackie

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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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s.tung

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Reply 2 on: Mar 21, 2021
Gracias!

mammy1697

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

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