CHM 2046 Lecture Notes - Lecture 19: Lead(Ii) Fluoride, Lead(Ii) Sulfate, Silver Sulfide

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Published on 19 Jul 2019
School
University of Florida
Department
Chemistry
Course
CHM 2046
Look at sample problem 19.5 in the 8th ed Silberberg book.
Write the ion-product expression at equilibrium for each compound: How to enter
the correct answer: e.g. silver sulfate (Ag2SO4) enter this: {Ag+}2{SO42-} don't enter
spaces, use square brackets [] not {} or () for concentration and don't worry about
subscripting or superscripting
(1) magnesium carbonate
(2) calcium phosphate
(3) silver sulfide
Answer 1:
[Mg2+][CO32-]
Answer 2:
[Ca2+]3[PO43-]2
Answer 3:
[Ag+]2[S2-]
Question 2
1 / 1 pts
Look at sample problem 19.6 in the 8th ed Silberberg book.
Enter your answers in scientific notation to 2 sig figs e.g. if you find the answer is
0.0000065 enter 6.5e-6,
1. Lead(II) sulfate is a key component in lead-acid car batteries. Its solubility in
water at 25°C is 4.25×103 g/100. mL solution. What is the
K
sp of
PbSO4?
2. When lead(II) fluoride is shaken with pure water at 25°C, the solubility is found
to be 0.64 g/L. Calculate the
K
sp of
PbF2.
Answer 1:
1.96e-8
Answer 2:
7.0e-8
Question 3
1 / 1 pts
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