Textbook Question
Explain the following observations:
a. More sugar dissolves in hot tea than in iced tea.
Ch.9 Solutions
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 9, Problem 23a
State whether each of the following refers to a saturated or an unsaturated solution:
a. A crystal added to a solution does not change in size.
Verified step by step guidance1
Understand the definitions: A saturated solution contains the maximum amount of solute that can dissolve at a given temperature, meaning it is in equilibrium with undissolved solute. An unsaturated solution can still dissolve more solute.
Analyze the scenario: When a crystal is added to a solution and does not change in size, it indicates that the solution is already at equilibrium with the solute.
Relate this observation to the concept of saturation: If the solution is at equilibrium, it means no more solute can dissolve, and the solution is saturated.
Conclude based on the evidence: The lack of change in the crystal's size confirms that the solution is saturated.
Summarize: The solution is saturated because it has reached its maximum solubility, and the added crystal does not dissolve or grow.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Saturated Solution
A saturated solution is one in which the maximum amount of solute has been dissolved in a solvent at a given temperature and pressure. In this state, any additional solute added will not dissolve and may remain as a solid, indicating that the solution has reached its limit of solubility.
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Unsaturated Solution
An unsaturated solution is one that contains less solute than it has the capacity to dissolve at a given temperature and pressure. In this case, if more solute is added, it will continue to dissolve until the solution becomes saturated.
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Equilibrium in Solutions
Equilibrium in solutions refers to the state where the rate of dissolution of solute equals the rate of crystallization. In a saturated solution, this equilibrium is established, meaning that the amount of solute remains constant over time, as seen when a crystal added to the solution does not change in size.
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Related Practice
Textbook Question
State whether each of the following refers to a saturated or an unsaturated solution:
c. A uric acid concentration of 4.6 mg/100 mL in the kidney does not cause gout.
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Textbook Question
When Jeff's blood was tested, the chloride level was 0.45 g/dL.
b. According to Table 9.6, is this value above, below, or within the normal range?
Textbook Question
An intravenous saline solution contains 154 mEq/L each of Na+ and Cl–. How many moles each of Na+ and Cl– are in 1.00 L of the saline solution?
Textbook Question
A solution containing 80. g of KCl in 200. g of H2O at 50 °C is cooled to 20 °C. a. How many grams of KCl remain in solution at 20 °C?
Textbook Question
An intravenous solution contains 40. mEq/L of Cl– and 15 mEq/L of HPO42–. If Na+ is the only cation in the solution, what is the Na+ concentration, in milliequivalents per liter?