Domanda del libro di testo
How many grams of CaO should be dissolved in sufficient
water to make 1.00 L of a solution with a pH of 10.50?
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Ch.16 - Aqueous Equilibria: Acids & Bases
McMurry8th EditionChemistryISBN: 9781292336145
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TOC.tableOfContents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
Capitolo 16, Problema 84a
Calculate the pH of solutions prepared by: (a) Dissolving 4.8 g of lithium hydroxide in water to give 250 mL of solution.
Guida verificata passo dopo passo1
Calculate the number of moles of lithium hydroxide (LiOH) using its molar mass.
Determine the molarity of the LiOH solution by dividing the number of moles by the volume of the solution in liters.
Recognize that LiOH is a strong base and dissociates completely in water, so the concentration of OH⁻ ions is equal to the molarity of the LiOH solution.
Calculate the pOH of the solution using the formula \( \text{pOH} = -\log[\text{OH}^-] \).
Convert the pOH to pH using the relationship \( \text{pH} + \text{pOH} = 14 \).
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pH Scale
The pH scale measures the acidity or basicity of a solution, ranging from 0 to 14. A pH of 7 is neutral, values below 7 indicate acidity, and values above 7 indicate basicity. The scale is logarithmic, meaning each whole number change represents a tenfold change in hydrogen ion concentration.
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Percorso guidato
02:33
The pH Scale
Strong Bases
Strong bases, like lithium hydroxide (LiOH), completely dissociate in water to produce hydroxide ions (OH-). This complete dissociation means that the concentration of hydroxide ions directly influences the pH of the solution, making it essential to calculate the concentration of LiOH to determine the resulting pH.
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Percorso guidato
01:09Strong Acid-Strong Base Titration
Concentration Calculations
To find the pH of a solution, it is crucial to calculate the molarity, which is the number of moles of solute per liter of solution. For lithium hydroxide, the mass of the solute is converted to moles using its molar mass, and then the volume of the solution is used to find the concentration, which is necessary for determining the pH.
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Percorso guidato
07:35Calculate Concentration of the Basic Form
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