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Questions and Answers
A solubility curve shows that the solubility of gas 'X' in water decreases as temperature increases. What can be inferred about the dissolution of gas 'X' in water?
A solubility curve shows that the solubility of gas 'X' in water decreases as temperature increases. What can be inferred about the dissolution of gas 'X' in water?
- The dissolution of gas 'X' is endothermic.
- The dissolution of gas 'X' is independent of temperature.
- The dissolution of gas 'X' requires a catalyst.
- The dissolution of gas 'X' is exothermic. (correct)
A solution contains 60g of solute 'Y' in 100g of water at 50°C. According to the solubility curve, the solubility of solute 'Y' at 50°C is 45g/100g H₂O. What type of solution is this?
A solution contains 60g of solute 'Y' in 100g of water at 50°C. According to the solubility curve, the solubility of solute 'Y' at 50°C is 45g/100g H₂O. What type of solution is this?
- Saturated with undissolved solids (correct)
- Supersaturated
- Unsaturated
- Saturated
The solubility of salt 'Z' increases with temperature. At 20°C, the solubility is 30g/100g H₂O, and at 60°C, it's 60g/100g H₂O. If a saturated solution of salt 'Z' is made with 200g of water at 60°C, how much salt 'Z' will crystallize out if the solution is cooled to 20°C?
The solubility of salt 'Z' increases with temperature. At 20°C, the solubility is 30g/100g H₂O, and at 60°C, it's 60g/100g H₂O. If a saturated solution of salt 'Z' is made with 200g of water at 60°C, how much salt 'Z' will crystallize out if the solution is cooled to 20°C?
- 120g
- 15g
- 30g
- 60g (correct)
For a particular solute, the solubility increases significantly with increasing temperature. Which of the following statements is most likely true?
For a particular solute, the solubility increases significantly with increasing temperature. Which of the following statements is most likely true?
Compound 'R' has a solubility of 25g per 100g of water at 30°C. A solution is prepared by dissolving 20g of compound 'R' in 80g of water at 30°C. Which of the following best describes the resulting solution?
Compound 'R' has a solubility of 25g per 100g of water at 30°C. A solution is prepared by dissolving 20g of compound 'R' in 80g of water at 30°C. Which of the following best describes the resulting solution?
Flashcards
Solubility Curve
Solubility Curve
A graph showing the solubility of a substance at various temperatures.
Solubility and Heat
Solubility and Heat
If solubility increases with temperature, dissolution is endothermic (requires heat). If solubility decreases, it's exothermic (releases heat).
Reading Solubility
Reading Solubility
Find the given temperature on the x-axis, trace up to the curve, and read the corresponding solubility on the y-axis.
Solution States on Curve
Solution States on Curve
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Solute Change with Temperature
Solute Change with Temperature
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Study Notes
- Solubility curves can show the relationship between temperature and the solubility of a solute.
- Solutes can be identified where solubility increases when the temperature increases or decreases using a solubility curve.
- Solubility curves can help determine if the dissolution of a solute is endothermic or exothermic.
- The specific solubility of a solute at a given temperature can be determined using solubility curves.
- Information from solubility curves can predict if a given amount of solute/solvent results in an unsaturated, saturated, or supersaturated solution, including solutions with undissolved solids.
- The amount of solute needed to form a saturated solution can be calculated from solubility curves.
- Solubility curves can assist in calculating the amount of solute that will dissolve or crystallize out when the temperature changes.
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