Domanda del libro di testo
Which of the following solutions is the most acidic? (a) 0.2 M
Ba(OH)2, (b) 0.2 M H2SO3, (c) 1.0 M glucose 1C6H12O6).
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Ch.16 - Acid-Base Equilibria
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 16, Problema 32
Which of the following solutions is the most basic? (a) 0.6 M NaCl, (b) 0.150 M CsOH, (c) 0.100 M Sr1OH22.
Guida verificata passo dopo passo1
Identify the nature of each compound: NaCl is a neutral salt, CsOH is a strong base, and Sr(OH)2 is a strong base.
Recognize that the basicity of a solution is determined by the concentration of hydroxide ions (OH⁻) it produces.
Calculate the concentration of OH⁻ ions for each solution: NaCl does not produce OH⁻ ions, CsOH produces OH⁻ ions equal to its concentration, and Sr(OH)2 produces twice the concentration of OH⁻ ions because it dissociates into two OH⁻ ions per formula unit.
Compare the OH⁻ ion concentrations: 0 M for NaCl, 0.150 M for CsOH, and 0.200 M for Sr(OH)2.
Determine which solution has the highest OH⁻ concentration, indicating it is the most basic.
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pH and Basicity
pH is a measure of the hydrogen ion concentration in a solution, indicating its acidity or basicity. A pH value above 7 signifies a basic solution, while a value below 7 indicates acidity. Basic solutions contain higher concentrations of hydroxide ions (OH-) compared to hydrogen ions (H+), which is crucial for determining the most basic solution among the options provided.
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Percorso guidato
02:33
The pH Scale
Strong Bases
Strong bases are substances that completely dissociate in water to produce hydroxide ions. Examples include alkali metal hydroxides like CsOH and alkaline earth metal hydroxides like Sr(OH)2. The strength of a base is determined by its ability to increase the concentration of OH- ions in solution, which directly affects the pH and basicity of the solution.
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Percorso guidato
01:09Strong Acid-Strong Base Titration
Concentration and Dilution
Concentration refers to the amount of solute present in a given volume of solution, typically expressed in molarity (M). In this context, higher concentrations of strong bases will lead to a greater production of hydroxide ions, thus increasing the basicity of the solution. Understanding how concentration affects pH is essential for comparing the basicity of the given solutions.
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Percorso guidato
00:58Dilution Equation
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Deuterium oxide 1D2O, where D is deuterium, the hydrogen-2 isotope) has an ion-product constant, Kw, of 8.9 * 10-16 at 20 °C. Calculate 3D+4 and 3OD-4 for pure (neutral) D2O at this temperature.
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