7. Tooth enamel (Cas(PO4)3OH) is a slightly soluble compound that exists as the equilibrium shown below. If the Ksp of tooth enamel in water is 6.8 x 10-37 calculate the molar solubility of tooth enamel. Cas(PO4)3OH (s) → 5Ca²+ (aq) + 3PO4³ (aq) + OH- (aq) a. 2.7 x 105 M b. 5.84 x 108 M C. 8.2 x 10-19 M d. 6.4 x 10⁹ M 2.00

7. Tooth enamel (Cas(PO4)3OH) is a slightly soluble compound that exists as the equilibrium shown below. If the Ksp of tooth enamel in water is 6.8 x 10-37 calculate the molar solubility of tooth enamel. Cas(PO4)3OH (s) → 5Ca²+ (aq) + 3PO4³ (aq) + OH- (aq) a. 2.7 x 105 M b. 5.84 x 108 M C. 8.2 x 10-19 M d. 6.4 x 10⁹ M 2.00

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 12.54PAE

See similar textbooks

Similar questions

Magnesium hydroxide, Mg(OH)2, is the active ingredient in die antacid TUMS and has a Ksp value of 8.9 1012. If a 10.0-g sample of Mg(OH)2 is placed in 500.0 mL of solution, calculate the moles of OH ions present. Because the Ksp value for Mg(OH)2 is much less than 1, not a lot of solid dissolves in solution. Explain how Mg(OH)2 works to neutralize large amounts of stomach acid.
Nickel(II) formate [Ni(HCO2)2] is widely used as a catalyst precursor and to make metallic nickel. It can be prepared in the general chemistry laboratory by treating nickel(II) acetate with formic acid (HCO2H). Ni(CH3CO2)2(aq) + 2 HCO2H(aq) Ni(HCO2)2(aq) + 2 CH3CO2H(aq) Green crystalline Ni(HCO2)2 is precipitated after adding ethanol to the solution. (a) What is the theoretical yield of nickel(II) formate from 0.500 g of nickel(II) acetate and excess formic acid? (b) Is nickel(II) formate paramagnetic or diamagnetic? If it is paramagnetic, how many unpaired electrons would you expect? (c) If nickel(II) formate is heated to 300 C in the absence of air for 30 minutes, the salt decomposes to form pure nickel powder. What mass of nickel powder should be produced by heating 253 mg of nickel(II) formate? Are nickel atoms paramagnetic?
Which of the following is more likely to precipitate the hydroxide ion? Cu(OH)2(s) *=» Ctr+(aq) + 2 OH’(aq) K = 1.6 X IO-19 Ca(OH)2(s) *=» Ca2+(aq) + 2 OH’(aq) K = 7.9 X 10"6
According to the Resource Conservation and Recovery Act (RCRA), waste material is classified as toxic and must be handled as hazardous if the lead concentration exceeds 5 mg/L. By adding chloride ion, the lead ion will precipitate as PbCl2, which can be separated from the liquid portion. Once the lead has been removed, the rest of the waste can be sent to a conventional waste treatment facility. How many grams of sodium chloride must be added to 500 L of a waste solution to reduce the concentration of the Pb2+ ion from 10 to 5 mg/L?
Cream of tartar, a common ingredient in cooking, is the common name for potassium bitartrate (abbreviated KBT, molar mass = 188.2 g/mol). Historically, KBT was a crystalline solid that formed on the casks of wine barrels during the fermentation process. Calculate the maximum mass of KBT that can dissolve in 250.0 mL of solution to make a saturated solution. The Ksp value for KBT is 3.8 104.
Most barium compounds are very poisonous; however, barium sulfate is often administered internally as an aid in the X-ray examination of the lower intestinal tract (Figure 15.4). This use of BaSO4 is possible because of its low solubility. Calculate the molar solubility of BaSO4 and the mass of barium present in 1.00 L of water saturated with BaSO4.
Both AgCl and Agl dissolve in NH3.. (a) What mass of AgI dissolves in 1.0 L of 1.0 M NH3?. (b) VNhat mass of AgCl dissolves in 1.0 L of 1.0 M NH3?
The Ksp value for Calcium Phosphate [Ca3(PO4)2] is 1.00 x 10-26 so calculate the molar solubility in units of grams per liter of calcium ions [Ca2+(aq)] if a chemist only made 2.198 Liters. What would the new molar solubility in grams per liter of calcium ions [Ca2+(aq)] be if the chemist added 0.129 M of Calcium Sulfate [CaSO4] to the solution? Calculate the ion products (Q) for Calcium Phosphate [Ca3(PO4)2] after the addition of the 0.129 M of Calcium Sulfate [CaSO4] to the solution. Determine if the reaction will shift to the right (no precipitate will form), shift to the left (a precipitate will form), or is at equilibrium.
The Ksp value for Calcium Phosphate [Ca3(PO4)2] is 1.00 x 10-26 so calculate themolar solubility in units of grams per liter of calcium ions [Ca2+(aq)] if a chemist only made 2.198 Liters. What would the new molar solubility in grams per liter of calcium ions [Ca2+(aq)] be if the chemist added 0.129 M of Calcium Sulfate [CaSO4] to the solution? Calculate the ion products (Q) for Calcium Phosphate [Ca3(PO4)2] after the addition of the 0.129 M of Calcium Sulfate [CaSO4] to the solution. Determine if the reaction will shift to the right (no precipitate will form), shift to the left (a precipitate will form), or is at equilibrium
Tooth enamel consists of hydroxyapatite, Ca5(PO4)3OH (Ksp = 8 × 10−37). Fluoride ion added to toothpaste and also drinking water reacts with Ca5(PO4)3OH to form the more tooth decay–resistant fluorapatite, Ca5(PO4)3F (Ksp = 1.0 × 10−60). Fluoridated water has dramatically decreased cavities among children. Calculate the solubility of Ca5(PO4)3OH and of Ca 5(PO4)3F in water.
One way to reduce the presence of lead in water is to add a phosphate corrosion inhibitor, which forms an insoluble saltwith lead, coating the pipes with a protective mineral later: Pb3(PO4)2(s) ⇌ 3Pb2+(aq) + 2PO43-(aq) Kc=9.9 x 10-55 a.) Calculate the solubility of lead (Pb2+) in g/L when Pb3(PO4)2 is dissolved in water. b.) The acceptable level of lead in water is less than 1x10-6g/L. If phosphate is added to drinking water, does it keep the lead levels below the allowed limit? c.) In 2014, the city of Flint, MI, changed water sources to a system that didn’t include phosphate. Instead, it used chlorine to treat water. The Ksp of lead chloride is 1.5x10-5. The switch increased the levels of lead in the drinking water and significantly affected the community. Explain why switching water sources increased the lead levels in Flint’s drinking water.
Copper(I) ions in aqueous solution react with NH3(aq)NH3(aq) according to Cu+(aq)+2NH3(aq)⟶Cu(NH3)+2(aq)?f=6.3×1010Cu+(aq)+2NH3(aq)⟶Cu(NH3)2+(aq)Kf=6.3×1010 Calculate the solubility (in g·L−1) of CuBr(s)CuBr(s) (?sp=6.3×10−9Ksp=6.3×10−9) in 0.67 M0.67 M NH3(aq)NH3(aq).