Domanda del libro di testo
By referring to Figure 13.15, determine whether the addition of 40.0 g of each of the following ionic solids to 100 g of water at 40 °C will lead to a saturated solution: (d) Pb(NO3)2.
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Ch.13 - Properties of Solutions
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 13, Problema 24
The solubility of MnSO4 · H2O in water at 20 °C is 70 g per 100 mL of water. (b) Given a solution of MnSO4 · H2O of unknown concentration, what experiment could you perform to determine whether the new solution is saturated, supersaturated, or unsaturated?
Guida verificata passo dopo passo1
Step 1: Understand the definitions of saturated, unsaturated, and supersaturated solutions. A saturated solution contains the maximum amount of solute that can dissolve at a given temperature. An unsaturated solution can dissolve more solute, while a supersaturated solution contains more solute than can typically dissolve at that temperature.
Step 2: Prepare a sample of the unknown MnSO4 · H2O solution. Ensure that the solution is at the same temperature as the given solubility data, which is 20 °C.
Step 3: Add a small amount of solid MnSO4 · H2O to the solution. Observe whether the added solute dissolves, remains undissolved, or causes crystallization.
Step 4: Analyze the observations: If the added solute dissolves, the solution is unsaturated. If the added solute does not dissolve, the solution is saturated. If crystallization occurs, the solution is supersaturated.
Step 5: Optionally, filter and dry any undissolved or crystallized MnSO4 · H2O to confirm the amount of solute present, comparing it to the known solubility to further verify the solution's status.
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Solubility
Solubility is the maximum amount of a solute that can dissolve in a solvent at a given temperature and pressure, resulting in a saturated solution. For MnSO4 · H2O, its solubility at 20 °C is 70 g per 100 mL of water, meaning that any solution containing more than this amount would be supersaturated, while less would be unsaturated.
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Percorso guidato
00:28
Solubility Rules
Saturation Point
The saturation point is the stage at which a solution can no longer dissolve additional solute at a specific temperature. If a solution reaches this point, any added solute will remain undissolved, indicating that the solution is saturated. Understanding this concept is crucial for determining the state of the unknown solution.
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03:05Boiling Point Elevation
Crystallization Test
A crystallization test involves cooling a solution or adding a small amount of solute to observe if crystals form. If crystals appear, the solution is likely supersaturated; if no crystals form and the solution remains clear, it is unsaturated. This test helps identify the concentration state of the unknown MnSO4 · H2O solution.
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Percorso guidato
14:42Test for Anions
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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: (b) Pb(NO3)2,
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Domanda del libro di testo
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Two nonpolar organic liquids, hexane (C6H14) and heptane (C7H16), are mixed. (b) Hexane and heptane are miscible with each other in all proportions. In making a solution of them, is the entropy of the system increased, decreased, or close to zero, compared to the separate pure liquids?
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Domanda del libro di testo
By referring to Figure 13.15, determine whether the addition of 40.0 g of each of the following ionic solids to 100 g of water at 40 °C will lead to a saturated solution:(c) K2Cr2O7
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