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Solubility

Solubility. 9D demonstrate how various factors influence solubility including temperature, pressure, and nature of the solute and solvent. Factors Affecting Rate of Solution (How fast something dissolves). 1. Stirring. 2. Temperature of solvent. 3. Surface area of solute

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Solubility

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  1. Solubility 9D demonstrate how various factors influence solubility including temperature, pressure, and nature of the solute and solvent.

  2. Factors Affecting Rate of Solution(How fast something dissolves) 1. Stirring 2. Temperature of solvent 3. Surface area of solute (size of particles)

  3. Solubility of a Solid • The solubility of a solid is affected by both temperature and the nature of solute and solvent.

  4. Solubility of a Gas The solubility of a gas is affected by both temperature and pressure

  5. 1. The table shows data from an investigation designed to find a liquid solution that is both an acid and a strong electrolyte. Based on the data, a solution that is both an acid and a strong electrolyte is — • Solution 1 • Solution 2 • Solution 3 • Solution 4

  6. 2. A 0.2 g crystal of gypsum dissolves very slowly in 100 mL of water while the water is stirred. Which of these would cause the gypsum to dissolve faster? • Decreasing the water temperature • Stopping the stirring • Lowering the air pressure • Crushing the crystal

  7. 3. All of these can affect the rate at which a solid dissolves in water except — • decreasing air pressure • stirring the water • increasing the temperature of the water • using larger crystals of the solid

  8. 4. Over time an open soft drink will lose carbonation (dissolved CO2). Which of these allows the CO2 to remain in solution the longest? • Reduced air pressure • Exposure to direct sunlight • Increased air currents • Cooler temperatures

  9. 5. The table shows temperature and pressure in four containers holding the same amount of water. According to the table, in which container can the most sodium chloride be dissolved in the water? • Q • R • S • T

  10. 6. Power plants that discharge warm water into rivers have a negative effect on aquatic life. This is because the higher water temperature — • increases the pressure of the river water • increases the pH value of the river water • decreases sediment solubility in the river water • decreases the dissolved oxygen in the river water

  11. 7. Nine groups of students dissolved as much potassium chloride as possible in water. Each group used 100 mL of water heated to a different temperature. Which graph shows the relationship between solubility and temperature for potassium chloride? • [Option 1] • [Option 2] • Option 3] • [Option 4]

  12. 8. MTBE is a gasoline additive that has entered some groundwater supplies. According to the table above, which of the following water temperatures would allow 79 grams of MTBE to dissolve in 1 liter of water? • 0ºC • 10ºC • 30ºC • 40ºC

  13. 9. Which of the following describes a trend in the data shown in the graph to the right? • The solubility of all the salts increases as temperature increases. • As temperature increases from 30⁰C to 60⁰C, the solubility of KNO3 increases more than that of KCl. • An increase in atmospheric pressure causes an increase in the solubility of KCl. • Increasing the temperature of a KNO3 solution from 30⁰C to 60⁰C decreases the solubility of KNO3 by half.

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