Textbook Question
Indicate whether each statement is true or false: (c) As you cool a saturated solution from high temperature to low temperature, solids start to crystallize out of solution if you achieve a supersaturated solution.
Ch.13 - Properties of Solutions
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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Table of contents
- Ch.1 - Introduction: Matter, Energy, and Measurement111
- Ch.2 - Atoms, Molecules, and Ions166
- Ch.3 - Chemical Reactions and Reaction Stoichiometry138
- Ch.4 - Reactions in Aqueous Solution127
- Ch.5 - Thermochemistry104
- Ch.6 - Electronic Structure of Atoms109
- Ch.7 - Periodic Properties of the Elements107
- Ch.8 - Basic Concepts of Chemical Bonding102
- Ch.9 - Molecular Geometry and Bonding Theories120
- Ch.10 - Gases122
- Ch.11 - Liquids and Intermolecular Forces79
- Ch.12 - Solids and Modern Materials102
- Ch.13 - Properties of Solutions99
- Ch.14 - Chemical Kinetics153
- Ch.15 - Chemical Equilibrium83
- Ch.16 - Acid-Base Equilibria109
- Ch.17 - Additional Aspects of Aqueous Equilibria117
- Ch.18 - Chemistry of the Environment60
- Ch.19 - Chemical Thermodynamics109
- Ch.20 - Electrochemistry113
- Ch.21 - Nuclear Chemistry79
- Ch.22 - Chemistry of the Nonmetals52
- Ch.23 - Transition Metals and Coordination Chemistry57
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry7
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Not the one you use?Change textbook
Chapter 13, Problem 34a
Which of the following in each pair is likely to be more soluble in water: (a) cyclohexane (C6H12) or glucose (C6H12O6),
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Identify the key structural differences between cyclohexane (C_6H_12) and glucose (C_6H_12O_6).
Recognize that cyclohexane is a nonpolar hydrocarbon, while glucose contains multiple hydroxyl (OH) groups, making it polar.
Recall the principle 'like dissolves like,' which suggests that polar substances are more soluble in polar solvents like water.
Consider the ability of glucose to form hydrogen bonds with water due to its hydroxyl groups, enhancing its solubility.
Conclude that glucose is likely to be more soluble in water than cyclohexane due to its polar nature and ability to hydrogen bond.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Polarity and Solubility
Polarity refers to the distribution of electrical charge over the atoms in a molecule. Polar molecules, which have a significant difference in electronegativity between their atoms, tend to dissolve well in polar solvents like water. In contrast, nonpolar molecules do not interact favorably with polar solvents, leading to lower solubility.
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Molecular Polarity
Hydrogen Bonding
Hydrogen bonding is a type of strong intermolecular attraction that occurs when hydrogen is bonded to highly electronegative atoms like oxygen or nitrogen. In the case of glucose, the presence of hydroxyl (-OH) groups allows it to form hydrogen bonds with water, significantly enhancing its solubility compared to nonpolar compounds like cyclohexane.
Molecular Structure and Functional Groups
The molecular structure and functional groups of a compound play a crucial role in determining its chemical properties, including solubility. Glucose contains multiple hydroxyl groups that increase its interaction with water, while cyclohexane, being a hydrocarbon with a ring structure, lacks polar functional groups, making it less soluble in water.
Related Practice
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Which of the following in each pair is likely to be more soluble in water: (c) HCl or ethyl chloride (CH3CH2Cl)? Explain in each case.
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Which of the following in each pair is likely to be more soluble in water: (b) propionic acid (CH3CH2COOH) or sodium propionate (CH3CH2COONa)
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Which of the following in each pair is likely to be more soluble in hexane, C6H14: (a) CCl4 or CaCl2, (b) benzene (C6H6) or glycerol, CH2(OH)CH(OH)CH2OH, (c) octanoic acid, CH3CH2CH2CH2CH2CH2CH2COOH, or acetic acid, CH3COOH? Explain your answer in each case.
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