DLD 5- Solubility Curves

Answer the following questions using your knowledge of Solubility Curves. On the solubility curve, which solute shows the leastresponse to temperature change? NH4Cl HCl KCl NH3 Use the solubility curve below to answer the next three questions. A student performs an experiment to find the solubility of a substance. The student finds the amount of substance needed to make a saturated solution in 100g of water at different temperatures. The student’s data are shown in the table below.What is the identity of the substance? sodium nitrate sodium chloride potassium nitrate potassium chlorate Which compound has the lowest rate of solubility? Sodium Nitrate Potassium Nitrate Sodium Chloride Potassium Chlorate Which solution could contain approximately 115 g of solute per 100g of H2O at 50oC? Sodium Nitrate Potassium Nitrate Sodium Chloride Potassium Chlorate Use the graph below to answer the next two questions. The graph shows the solubility of various compounds. Which salt solution could contain approximately 50g of solute per 100g of H2O at 80oC? A saturated solution of KCl An unsaturated solution of NaCl A saturated solution of KNO3 A supersaturated solution of NH4Cl According to the graph, which compound has the highest rate of solubility? KNO3 KCl NH4Cl NaCl Use the KNO3 Solubility graph below to answer the next three questions. According to the graph, what is the maximum approximate mass of KNO3 that would dissolve at 60oC and what is the relationship between temperature and solubility? The mass is approximately 140 g; increased temperatures lead to a decrease in solubility. The mass is approximately 110 g; increased temperatures lead to an increase in solubility. The mass is approximately 140 g; increased temperatures lead to an increase in solubility. The mass is approximately 110 g; increased temperatures lead to a decrease in solubility. Predict the state of matter for potassium nitrate and provide a reasoning: KNO3 is most likely a gas because the solubility increases as temperature increases KNO3 is most likely a gas because the solubility decreases as temperature increases KNO3 is most likely a solid or liquid because the solubility increases as temperature increases KNO3 is most likely a solid or liquid because the solubility decreases as temperature increases According to the solubility curve for potassium nitrate (KNO3), to saturate a solution at approximately 30oC, how much KNO3 would be necessary? Approximately 20 g Approximately 47 g Approximately 64 g Approximately 97 g The graph below shows the solubility curves for various ionic compounds. Use the graph to answer the next two questions. At which temperature does KCl have the same solubility as CuSO4? 18oC 38oC 73oC 100oC Which compound has the highest rate of solubility? CsNO3 NH4Br CuSO4 KCl Use the following two diagrams of a gas-liquid solution to help you determine which statement is true. Increased pressure in diagram B illustrates an decreased solubility of the gas in a liquid Increased pressure in diagram B illustrates an increased solubility of the gas in a liquid Increased pressure in diagram B forces the gas to be less in contact with the liquid, increasing solubility Increased pressure in diagram A forces the gas to be less in contact with the liquid, increasing solubility The solubility of a gas in a liquid Is unrelated to the pressure of the gas above the liquid Decreases as the pressure of the gas above the liquid increases Increases as the pressure of the gas above the liquid increases Increases as the pressure of the gas above the liquid decreases Which of the following would be less soluble in hot water than cold water? NaCl- Table salt O2 - Diatomic Oxygen KNO3- A solid used in fertilizers C12H22O12- Sucrose or Regular sugar Use the graph below to answer the next three questions Which of the solutes is most likely a gas? Solute A Solute B Solute C Solute D 40 g of each solute is added to a solution at 50oC. Which of the solutions would be unsaturated? Solution A Solution B Solution C Solution D A saturated solution is formed by dissolving 50g of solute in 100g of water at 80oC. Which solution is this? Solution A Solution B Solution C Solution D Use the graph below to answer the next three questions. According to the graph, what is the solubility of potassium iodide at 30oC? 180 g potassium iodide per 100g H2O How much potassium chlorate could be dissolved in 300 g (=300 cm3) of water at 90oC? Show your work. The solubility of potassium chlorate is 50 g per 100g H2O.300 g of water = 100 g x 3 so 50 g of potassium chlorate per 100g H2O x 3 = 150 g potassium chlorate would dissolve 100 g of potassium nitrate is dissolved in 100 cm3 of water at 60oC. a) Is this solution saturated, unsaturated or supersaturated? unsaturatedb) If 20g more of potassium nitrate are added to the solution, would the solution become unsaturated, saturated or supersaturated? supersaturatedc) If this new solution was heated to 75oC, would the solution become unsaturated, saturated or supersaturated? unsaturated