OWLV2 FOR EBBING/GAMMON'S GENERAL CHEMI
11th Edition
ISBN: 9781305673908
Author: Gammon
Publisher: Cengage Learning
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Chapter 17, Problem 17.115QP
A scientist was interested in how soluble rust is in acidic soils, so she set up an idealized problem to get an initial feel for the situation. A fairly acidic soil has a pH of 4.50. Also, rust is essentially Fe(OH)3. Therefore, she considered the following problem: Suppose a 1.00-g sample of iron(III) hydroxide is exposed to 1.00 L of a buffer with a pH of 4.50. She then calculated the nanograms of Fe3+ that dissolve in a liter of this buffer. Show how you would do this problem. Explain your work.
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A buffer solution was prepared that contained 0.60 M hydrogen fluoride, HF (Ka = 7.2 x
104) and 1.00M potassium fluoride, KF. The total volume was 250 mL.
(a) What ions and molecules are present in the solution? List them in order of decreasing
concentration:
Decreasing order of Concentration
(b) What is the pH of the buffer solution described above?
(c) What is the pH of 100. mL of the buffer solution if you add 100. x 10-3 g of NaOH? Assume
negligible change in volume. (USEFUL INFORMATION: MM NaOH = 39.997 g mol-1)
A chemistry graduate student is given 500. mL of a 1.80M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with K,= 4.9 x 10
– 10
What
mass of KCN should the student dissolve in the HCN solution to turn it into a buffer with pH =9.70?
You may assume that the volume of the solution doesn't change when the KCN is dissolved in it. Be sure your answer has a unit symbol, and round it to 2
significant digits.
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A chemistry graduate student is given 100.mL of a 0.40M trimethylamine ((CH3)3N) solution. Trimethylamine is a weak base with =Kb×7.410−4. What mass of (CH3)3NHCl should the student dissolve in the (CH3)3N solution to turn it into a buffer with pH =10.35? You may assume that the volume of the solution doesn't change when the (CH3)3NHCl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
Chapter 17 Solutions
OWLV2 FOR EBBING/GAMMON'S GENERAL CHEMI
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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