Solubllity Curves Chemistry Refereпce Tаbе

Solutions Review Questions Which of the following statements describes KCl(aq)? A) KCl is the solvent in a homogeneous mixture. B) KCl is the solvent in a heterogeneous mixture. C) KCl is the solute in a heterogeneous mixture. D) KCl is the solute in a homogeneous mixture. In an aqueous solution of potassium chloride, the solute is A) H₂O B) K C) KCl D) Cl In the reaction Al³⁺ + 6H₂O → Al(H₂O)₆³⁺, the Al³⁺ ion is undergoing the process called A) hydration B) addition C) hydrogenation D) neutralization Ionic solids will most likely dissolve in A) H₂O(l), which is a nonpolar solvent B) H₂O(l), which is a polar solvent C) CCl₄(l), which is a nonpolar solvent D) CCl₄(l), which is a polar solvent According to the Solubility Curves chemistry reference table, which of the following is the best description of the system prepared by dissolving 30 grams of 1 NH₃(g) in 100 grams of water at 20°C?   A) an unsaturated solution of NH₃ with no excess NH₃(g) B) a saturated solution of NH₃ in contact with excess NH₃(g) C) a saturated solution of NH₃ with no excess NH₃(g) D) an unsaturated solution of NH₃ in contact with excess NH₃(g) A solution containing 90. grams of KNO₃ per 100. grams of H₂O at 50.°C is considered to be A) concentrated and supersaturated B) dilute and supersaturated C) dilute and unsaturated D) concentrated and unsaturated 7. Which quantity of salt will form a saturated solution in 100 grams of water at 45°C? * A) 60 g of KNO₃ * B) 110 g of NaNO₃ * C) 35 g of NH₄Cl * D) 30 g of KCl 8. Based on the Solubility Curves chemistry reference table, when 100 grams of water saturated with KNO₃ at 70°C is cooled to 25°C, the total number of grams of KNO₃ that will precipitate is * A) 80 g * B) 30 g * C) 45 g * D) 95 g 9. According to the Solubility Curves chemistry reference table, a temperature change from 10°C to 30°C would have the least effect on the solubility of * A) KClO₃ * B) NaCl * C) SO₂ * D) NH₃ 10. Based on the Solubility Guidelines chemistry reference table, which saturated salt solution is most concentrated? * A) Ag₂S(aq) * B) Ag₂CO₃(aq) * C) AgCl(aq) * D) AgC₂H₃O₂(aq) 11. In the laboratory, a student mixes aqueous solutions of NiSO₄ and NaOH. What will be the result of this experiment? * A) SO₂ gas is released * B) Na₂SO₄ precipitates out of solution * C) no visible reaction occurs * D) Ni(OH)₂ precipitates out of solution 12. Solutions of AgNO₃(aq) and KCl(aq) are mixed. Will a visible reaction occur? * A) Yes, because KNO₃ will precipitate out of solution. * B) No, because AgCl is soluble in water. * C) No, because KNO₃ is soluble in water. * D) Yes, because AgCl will precipitate out of solution. 13. Which solution is the most concentrated? A) 0.2 mole of solute dissolved in 300 mL of solvent B) 0.4 mole of solute dissolved in 100 mL of solvent C) 0.1 mole of solute dissolved in 400 mL of solvent D) 0.3 mole of solute dissolved in 200 mL of solvent 14. What is the molarity of a solution of KNO₃ (molecular mass = 101) that contains 404 grams of KNO₃ in 2.00 liters of solution? A) 1.00 M B) 2.00 M C) 0.500 M D) 4.00 M 15. What is the molarity of an H₂SO₄ solution if 0.25 liter of the solution contains 0.75 mole of H₂SO₄? A) 3.0 M B) 0.33 M C) 6.0 M D) 0.75 M 16. What is the total number of grams of solute in 500. mL of 1 M CH₃COOH (formula mass = 60.)? A) 90. g B) 60. g C) 120. g D) 30. g 17. A 500. gram sample of an aqueous potassium chloride solution contains 0.025 grams of solute. What is the concentration of the solution in parts per million (ppm)?   A) 5.0 x 10⁻⁵ ppm B) 50. ppm C) 2.5 x 10⁴ ppm D) 250. ppm 18. How many grams of KI are needed to prepare 2,000. grams of an aqueous solution containing 25 parts per million (ppm) of KI solute?   A) 5.0 x 10⁴ g B) 0.0125 g C) 1.25 x 10⁴ g D) 0.050 g 19. Which solution has the highest boiling point? A) 1 mole of NaNO₃ in 500 g of water B) 1 mole of NaNO₃ in 250 g of water C) 1 mole of NaNO₃ in 750 g of water D) 1 mole of NaNO₃ in 1000 g of water 20. Which solution will freeze at the lowest temperature? A) 1 mole of sugar in 500 g of water B) 2 moles of sugar in 1,000 g of water C) 1 mole of sugar in 1,000 g of water D) 2 moles of sugar in 500 g of water 21. What occurs as a salt dissolves in water? A) The number of ions in the solution decreases, and the freezing point increases. B) The number of ions in the solution increases, and the freezing point increases. C) The number of ions in the solution increases, and the freezing point decreases. D) The number of ions in the solution decreases, and the freezing point decreases. 22. When ethylene glycol (an antifreeze) is added to water, the boiling point of the water A) decreases, and the freezing point decreases B) increases, and the freezing point increases C) decreases, and the freezing point increases D) increases, and the freezing point decreases