Domanda del libro di testo
By referring to Figure 13.15, determine the mass of each of the following salts required to form a saturated solution in 250 g of water at 30 °C: (c) Ce2(SO4)3.
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Ch.13 - Properties of Solutions
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 13, Problema 29
Common laboratory solvents include acetone (CH3COCH3), methanol (CH3OH), toluene (C6H5CH3), and water. Which of these is the best solvent for nonpolar solutes?
Guida verificata passo dopo passo1
Step 1: Understand the concept of polarity. Polarity in chemistry refers to the distribution of electric charge around atoms, chemical groups, or molecules. Polar molecules have a significant difference in electronegativity between their atoms, leading to a dipole moment.
Step 2: Recall the principle 'like dissolves like'. This principle suggests that polar solvents are good at dissolving polar solutes, and nonpolar solvents are good at dissolving nonpolar solutes.
Step 3: Identify the polarity of each solvent. Acetone (CH3COCH3) is polar due to its carbonyl group. Methanol (CH3OH) is polar because of its hydroxyl group. Toluene (C6H5CH3) is nonpolar due to its hydrocarbon structure. Water is highly polar due to its bent shape and hydrogen bonding.
Step 4: Determine which solvent is nonpolar. Based on the structures, toluene (C6H5CH3) is the nonpolar solvent among the options provided.
Step 5: Conclude that toluene is the best solvent for nonpolar solutes, as it shares similar nonpolar characteristics, allowing it to effectively dissolve nonpolar substances.
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Polarity of Solvents
Polarity refers to the distribution of electrical charge over the atoms in a molecule. Polar solvents, like water and methanol, have a significant difference in electronegativity between their atoms, leading to a dipole moment. Nonpolar solvents, such as toluene and acetone, have a more even distribution of charge, making them better suited for dissolving nonpolar solutes.
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Percorso guidato
02:38
Molecular Polarity
Like Dissolves Like
The principle of 'like dissolves like' states that polar solvents are effective at dissolving polar solutes, while nonpolar solvents are better for nonpolar solutes. This concept is crucial in predicting solubility and understanding solvent-solute interactions, as the molecular structure and polarity of both the solvent and solute determine their compatibility.
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02:14Henry's Law Solubility
Solvent Properties
Different solvents have unique properties that affect their ability to dissolve various substances. For instance, toluene is a nonpolar solvent with a low dielectric constant, making it effective for dissolving nonpolar compounds. Understanding the properties of solvents, including their polarity, boiling points, and molecular structure, is essential for selecting the appropriate solvent for a given solute.
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02:49Colligative Properties
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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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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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Domanda del libro di testo
Oil and water are immiscible. Which is the most likely reason? (a) Oil molecules are denser than water. (b) Oil molecules are composed mostly of carbon and hydrogen. (c) Oil molecules have higher molar masses than water. (d) Oil molecules have higher vapor pressures than water. (e) Oil molecules have higher boiling points than water.
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