Tooth enamel is composed of the mineral hydroxyapatite. The K sp of hydroxyapatite, Ca 5 (PO 4 ) 3 OH, is 6.8 × 10 −37 . Calculate the solubility of hydroxyapatite in pure water in moles per liter. How is the solubility of hydroxyapatite affected by adding acid? When hydroxyapatite is treated with fluoride, the mineral fluorapatite, Ca 5 (PO 4 ) 3 F, forms. The K sp of this substance is 1 × 10 −60 . Calculate the solubility of fluorapatite in water. How do these calculations provide a rationale for the fluoridation of drinking water?
Tooth enamel is composed of the mineral hydroxyapatite. The K sp of hydroxyapatite, Ca 5 (PO 4 ) 3 OH, is 6.8 × 10 −37 . Calculate the solubility of hydroxyapatite in pure water in moles per liter. How is the solubility of hydroxyapatite affected by adding acid? When hydroxyapatite is treated with fluoride, the mineral fluorapatite, Ca 5 (PO 4 ) 3 F, forms. The K sp of this substance is 1 × 10 −60 . Calculate the solubility of fluorapatite in water. How do these calculations provide a rationale for the fluoridation of drinking water?
Solution Summary: The author explains the solubility of Hydroxyapatite in water, the effect of addition of acid over it, and the rationale for the fluoridation of water.
Tooth enamel is composed of the mineral hydroxyapatite. The Ksp of hydroxyapatite, Ca5(PO4)3OH, is 6.8 × 10−37. Calculate the solubility of hydroxyapatite in pure water in moles per liter. How is the solubility of hydroxyapatite affected by adding acid? When hydroxyapatite is treated with fluoride, the mineral fluorapatite, Ca5(PO4)3F, forms. The Ksp of this substance is 1 × 10−60. Calculate the solubility of fluorapatite in water. How do these calculations provide a rationale for the fluoridation of drinking water?
Silver chromate, Ag2CrO4, is an "insoluble" substance with a Ksp value of 1.2 x 10^-12. Silver ion forms a stable complex ion with cyanide ion that has the formula Ag(CN)2- and a formation constant (Kf) of 5.3 x 10^18. Calculate the molar solubility of Ag2CrO4 in each of the following solutions. Write balanced chemical equations for any important equilibrium reactions that are occurring.
(a) in water
(b) in 2.00 M Na2CrO4
(c) 2.00 M NaCN
A chemistry graduate student is given 125. mL of a 1.00M trimethylamine ((CH3)N) solution. Trimethylamine is a weak base with K = 7.4 × 10-4. What
3
mass of (CH3)2NHBr should the student dissolve in the (CH3)2N solution to turn it into a buffer with pH = 10.91?
You may assume that the volume of the solution doesn't change when the (CH3)₂NHBr is dissolved in it. Be sure your answer has a unit symbol, and round it
to 2 significant digits.
0
Ox
x10
S
What is the solubility of Fe(OH)2 (Ksp = 7.9 × 10–15) in a solution that has a pH of 9.55?
Chapter 16 Solutions
Student Solutions Manual for Zumdahl/Zumdahl/DeCoste?s Chemistry, 10th Edition
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell