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OWLv2 for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 1 term (6 months)
11th Edition
ISBN: 9781305673939
Author: Darrell Ebbing; Steven D. Gammon
Publisher: Cengage Learning US
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Chapter 17, Problem 17.99QP
A solution contains 0.0150 M lead(II) ion. A concentrated sodium iodide solution is added dropwise to precipitate lead iodide (assume no volume change).
- a At what concentration of I− does precipitate start to form?
- b When [I−] = 2.0 × 10−3 M, what is the lead-ion concentration? What percentage of the lead(II) originally present remains in solution?
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Step 1
Lead(II) ions of Lead(II) nitrate reacts with chloride ion of NaCl to form a PbCl2 precipitate.
Pb2+(aq) + 2Cl-(aq) →PbCl2(s)
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Step 2
The precipitate of PbCl2 starts forming when the reaction quotient (Q=[Pb2+][Cl-]2) is greater than the solubility product of PbCl2.
The solubility product of PbCl2 is Ksp=1.17×10-5
To find the concentration of chloride ion that starts the precipitation of PbCl2, equate Q to solubility product and solve for the concentration of Chloride ion.
[Pb2+][Cl-]2 =1.17×10-5
[Cl-]2 =1.17×10-5[Pb2+]
[Cl-] =1.17×10-5[Pb2+]
[Pb2+] = concentration of lead(II) nitrate solution
[Cl-] =1.17×10-51.0×10-2=3.4205×10-2 M
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Step 3
The mass of NaCl needed to start the precipitation of PbCl2 is calculated below.
mass of NaCl =[Cl-]×Volume of solution ×Molar mass of NaCl
mass of NaCl =3.4205×10-2 M×800 mL ×58.44 gmol
mass of NaCl =3.4205×10-2 molL×800 ×10-3 L ×58.44 gmol
mass of NaCl =159915.216×10-5 g =1.599 g =1.6
3. If you have a solution that is 0.001 M carbonate (CO), to what concentration should the
concentration of Ag be raised in order to precipitate 90% of the carbonate? (You will need to find
the K of Ag CO, in the appendices of your textbook.)
A solution contains 0.0490 M Ca2+ and 0.0920 M Ag+. If solid NazPO4 is added to this mixture, which of the phosphate
species would precipitate out of solution first?
О Саз (РОд)2
O Ag3PO4
NazPO4
When the second cation just starts to precipitate, what percentage of the first cation remains in solution?
percentage:
%
Chapter 17 Solutions
OWLv2 for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 1 term (6 months)
Ch. 17.1 - Give solubility product expressions for the...Ch. 17.1 - Silver ion may be recovered from used photographic...Ch. 17.1 - Lead(II) arsenate, Pb3(AsO4)2, has been used as an...Ch. 17.1 - Prob. 17.4ECh. 17.1 - Prob. 17.1CCCh. 17.2 - a. Calculate the molar solubility of barium...Ch. 17.2 - Suppose you have equal volumes of saturated...Ch. 17.2 - Prob. 17.3CCCh. 17.3 - Anhydrite is a mineral composed of CaSO4 (calcium...Ch. 17.3 - A solution of 0.00016 M lead(II) nitrate,...
Ch. 17.4 - Which salt would have its solubility more affected...Ch. 17.4 - If you add a dilute acidic solution to a mixture...Ch. 17.5 - What is the concentration of Cu2+(aq) in a...Ch. 17.6 - Will silver iodide precipitate from a solution...Ch. 17.6 - What is the molar solubility of AgBr in 1.0 M...Ch. 17 - Suppose the molar solubility of nickel hydroxide....Ch. 17 - Explain why calcium sulfate is less soluble in...Ch. 17 - What must be the concentration of silver ion in a...Ch. 17 - Prob. 17.4QPCh. 17 - Explain why barium fluoride dissolves in dilute...Ch. 17 - Prob. 17.6QPCh. 17 - Prob. 17.7QPCh. 17 - Prob. 17.8QPCh. 17 - Prob. 17.9QPCh. 17 - Prob. 17.10QPCh. 17 - Prob. 17.11QPCh. 17 - Write the solubility product expression for the...Ch. 17 - What is the molar solubility of calcium oxalate,...Ch. 17 - Prob. 17.14QPCh. 17 - Solubility and Solubility Product You put 0.10-mol...Ch. 17 - Solubility Equilibria Consider three hypothetical...Ch. 17 - Which compound in each of the following pairs of...Ch. 17 - Prob. 17.18QPCh. 17 - You are given a saturated solution of lead(II)...Ch. 17 - Which of the following pictures best represents a...Ch. 17 - Which of the following pictures best represents an...Ch. 17 - Prob. 17.22QPCh. 17 - Prob. 17.23QPCh. 17 - Prob. 17.24QPCh. 17 - Use the solubility rules (Table 4.1) to decide...Ch. 17 - Use the solubility rules (Table 4.1) to decide...Ch. 17 - Write solubility product expressions for the...Ch. 17 - Write solubility product expressions for the...Ch. 17 - Prob. 17.29QPCh. 17 - The solubility of magnesium oxalate, MgC2O4, in...Ch. 17 - The solubility of cobalt(II) iodate in water is...Ch. 17 - Prob. 17.32QPCh. 17 - The pH of a saturated solution of copper(II)...Ch. 17 - A solution saturated in calcium hydroxide...Ch. 17 - Strontianite (strontium carbonate) is an important...Ch. 17 - Magnesite (magnesium carbonate, MgCO3) is a common...Ch. 17 - What is the solubility of PbF2 in water? The Ksp...Ch. 17 - What is the solubility of strontium iodate,...Ch. 17 - What is the solubility (in grams per liter) of...Ch. 17 - What is the solubility (in grams per liter) of...Ch. 17 - The solubility of magnesium fluoride, MgF2, in...Ch. 17 - The solubility of silver sulfate, Ag2SO4, in water...Ch. 17 - What is the solubility (in grams per liter) of...Ch. 17 - Calculate the molar solubility of strontium...Ch. 17 - From each of the following ion concentrations in a...Ch. 17 - From each of the following ion concentrations in a...Ch. 17 - Lead(II) chromate, PbCrO4, was used as a yellow...Ch. 17 - Lead sulfate PbSO4, was used as a white paint...Ch. 17 - The following solutions are mixed: 1.0 L of...Ch. 17 - A 45-mL sample of 0.015 M calcium chloride, CaCl2,...Ch. 17 - A 45.0-mL sample of 0.0015 M BaCl2 was added to a...Ch. 17 - A 65.0-mL sample of 0.010 M Pb(NO3)2 was added to...Ch. 17 - How many moles of calcium chloride, CaCl2, can be...Ch. 17 - Magnesium sulfate, MgSO4, is added to 456 mL of...Ch. 17 - What is the I concentration just as AgCl begins to...Ch. 17 - What is the Cl concentration just as Ag2CrO4...Ch. 17 - Write the net ionic equation in which the slightly...Ch. 17 - Write the net ionic equation in which the slightly...Ch. 17 - Which salt would you expect to dissolve more...Ch. 17 - Which salt would you expect to dissolve more...Ch. 17 - Write the chemical equation for the formation of...Ch. 17 - Write the chemical equation for the formation of...Ch. 17 - Sufficient sodium cyanide, NaCN, was added to...Ch. 17 - The formation constant Kf for the complex ion...Ch. 17 - Prob. 17.65QPCh. 17 - Predict whether nickel(II) hydroxide, Ni(OH)2,...Ch. 17 - What is the molar solubility of CdC2O4 in 0.10 M...Ch. 17 - What is the molar solubility of ZnS in 0.10 M NH3?Ch. 17 - Prob. 17.69QPCh. 17 - Describe how you could separate the following...Ch. 17 - A student dissolved a compound in water and added...Ch. 17 - A student was asked to identify a compound. In an...Ch. 17 - Prob. 17.73QPCh. 17 - Prob. 17.74QPCh. 17 - Prob. 17.75QPCh. 17 - Prob. 17.76QPCh. 17 - For cerium(III) hydroxide, Ce(OH)3, Ksp equals 2.0...Ch. 17 - Copper(II) ferrocyanide, Cu2Fe(CN)6, dissolves to...Ch. 17 - What is the solubility of magnesium hydroxide in a...Ch. 17 - What is the solubility of silver oxide, Ag2O, in a...Ch. 17 - What is the molar solubility of Mg(OH)2 in a...Ch. 17 - What is the molar solubility of Al(OH)3 in a...Ch. 17 - Prob. 17.83QPCh. 17 - What must be the concentration of chromate ion in...Ch. 17 - A 3.20-L solution of 1.25 103 M Pb(NO3)2 is mixed...Ch. 17 - Prob. 17.86QPCh. 17 - How many grams of sodium chloride can be added to...Ch. 17 - Prob. 17.88QPCh. 17 - Prob. 17.89QPCh. 17 - Prob. 17.90QPCh. 17 - Calculate the molar solubility of silver bromide,...Ch. 17 - Prob. 17.92QPCh. 17 - The solubility of zinc oxalate, ZnC2O4, in 0.0150...Ch. 17 - The solubility of cadmium oxalate. CdC2O4, in...Ch. 17 - Prob. 17.95QPCh. 17 - Prob. 17.96QPCh. 17 - A saturated solution of copper(II) iodate in pure...Ch. 17 - A saturated solution of lead iodate in pure water...Ch. 17 - A solution contains 0.0150 M lead(II) ion. A...Ch. 17 - A solution contains 0.00740 M calcium ion. A...Ch. 17 - a If the molar solubility of cobalt(II) hydroxide...Ch. 17 - a If the molar solubility of beryllium(II)...Ch. 17 - Although silver chloride is insoluble in water, it...Ch. 17 - Crystals of AgBr can be removed from...Ch. 17 - A 1.0-L solution that is 4.2 M in ammonia is mixed...Ch. 17 - Prob. 17.106QPCh. 17 - Prob. 17.107QPCh. 17 - Prob. 17.108QPCh. 17 - Prob. 17.109QPCh. 17 - A chemist mixes 1.00 L each of 0.100 M Na2CO3 and...Ch. 17 - Prob. 17.111QPCh. 17 - Prob. 17.112QPCh. 17 - An analytical chemist has a solution containing...Ch. 17 - How would the solubility of calcium fluoride be...Ch. 17 - A scientist was interested in how soluble rust is...Ch. 17 - Prob. 17.116QPCh. 17 - Prob. 17.117QPCh. 17 - Prob. 17.118QPCh. 17 - Prob. 17.119QPCh. 17 - Suppose you add 35.6 mL of 0.578 M H2SO4 to 55.6...Ch. 17 - Prob. 17.121QPCh. 17 - Prob. 17.122QPCh. 17 - Prob. 17.123QPCh. 17 - Suppose you have a water solution that is 0.0010 M...Ch. 17 - Prob. 17.125QPCh. 17 - Suppose that an aqueous solution is in equilibrium...Ch. 17 - Prob. 17.127QPCh. 17 - The text describes zinc hydroxide as an amphoteric...Ch. 17 - A solution is 1.5 104 M Zn2 and 0.20 M HSO4. The...Ch. 17 - Prob. 17.130QPCh. 17 - What is the solubility of calcium fluoride in a...Ch. 17 - What is the solubility of magnesium fluoride in a...Ch. 17 - Prob. 17.133QPCh. 17 - Prob. 17.134QP
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