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To 0.350L of 0.150MNH2 is added 0.150 L of 0.100 M
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General Chemistry: Principles and Modern Applications (11th Edition)
- A 1.0-L solution that is 4.2 M in ammonia is mixed with 26.7 g of ammonium chloride. a What is the hydroxide-ion concentration of this solution? b 0.075 mol of MgCl2 is added to the above solution. Assume that there is no volume change. After Mg(OH)2 has precipitated, what is the molar concentration of magnesium ion? What percent of the Mg2+ is removed from solution?arrow_forwardMarble is almost pure CaCO3. Acid rain has a devastating effect on marble statuary left outdoors. Assume that the reaction which occurs is CoCO3(s)+ H+(aq)Ca2+(aq)+HCO3(aq) Neglecting all other competing equilibria and using Tables 15.1 and 13.2, calculate (a) K for the reaction. (b) the molar solubility of CaCO3 in pure water. (c) the molar solubility of CaCO3 in acid rainwater with a pH of 4.00.arrow_forwardA buffer solution is composed of 1.360 g of KH2PO4 and 5.677 g of Na2HPO4. (a) What is the pH of the buffer solution? (b) What mass of KH2PO4 must be added to decrease the buffer solution pH by 0.50 unit from the value calculated in part (a)?arrow_forward
- How many grams of sodium chloride can be added to 785 mL of 0.0015 M silver nitrate before a precipitate forms?arrow_forwardA 0.4000 M solution of nitric acid is used to titrate 50.00 mL of 0.237 M barium hydroxide. (Assume that volumes are additive.) (a) Write a balanced net ionic equation for the reaction that takes place during titration. (b) What are the species present at the equivalence point? (c) What volume of nitric acid is required to reach the equivalence point? (d) What is the pH of the solution before any HNO3 is added? (e) What is the pH of the solution halfway to the equivalence point? (f) What is the pH of the solution at the equivalence point?arrow_forwardA solution is 0.047 M in both NaF and Na2CO3. Solid strontium nitrate, Sr(NO3)2, is added without changing the volume of the solution. (a) Which salt, SrCO3 or SrF2(Ksp=4.3109), will precipitate first? (b) What is [Sr2+] when the salt in (a) first begins to precipitate?arrow_forward
- A saturated solution of lead iodate in pure water has an iodate-ion concentration of 8.0 105 M. a What is the molar solubility of lead iodate in a 0.15 M lead nitrate solution at the same temperature? b Should the molar solubility of lead iodate in part a be the same as, greater than, or less than that of lead iodate in pure water? Why?arrow_forwardIf 10.0 mL of 2.0 103 M Cr(NO3)3 is added to 10.0 mL of a pH = 10.0 NaOH solution, will a precipitate form?arrow_forwardWhich of the following would form a buffer if added to 250.0 mL of 0.150 M SnF2? (a) 0.100 mol of HCl (b) 0.060 mol of HCl (c) 0.040 mol of HCl (d) 0.040 mol of NaOH (e) 0.040 mol ofarrow_forward
- How many grams of NaF must be added to 70.00 mL of 0.150 M HNO3 to obtain a buffer with a pH of 4.68?arrow_forwardA saturated solution of copper(II) iodate in pure water has a copper-ion concentration of 2.7 103 M. a What is the molar solubility of copper iodate in a 0.35 M potassium iodate solution? b What is the molar solubility of copper iodate in a 0.35 M copper nitrate solution? c Should there be a difference in the answers to parts a and b? Why?arrow_forwardLead(II) chromate, PbCrO4, was used as a yellow paint pigment (chrome yellow). When a solution is prepared that is 5.0 104 M in lead ion, Pb2, and 5.0 105 M in chromate ion, CrO42, would you expect some of the lead(II) chromate to precipitate?arrow_forward
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