Domanda del libro di testo
Which of the following species behave as strong acids or as
strong bases in aqueous solution?
(a) HNO2 (b) HNO3(c) NH4+ (d) Cl-
874
views
Ch.16 - Aqueous Equilibria: Acids & Bases
McMurry8th EditionChemistryISBN: 9781292336145
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
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 79b
Which of the indicators given in Figure 16.5, methyl violet, bromcresol green, phenol red, or thymolphthalein, would be most appropriate to detect a pH change from: (b) 8 to 10?
Guida verificata passo dopo passo1
Identify the pH range of interest, which is from 8 to 10.
Examine the chart to determine the pH range for each indicator: Bromocresol green (3.8-5.4), Methyl orange (3.1-4.4), Thymol blue (acid range) (1.2-2.8), Methyl violet (0-1.6).
Note that none of the indicators shown in the image cover the pH range of 8 to 10.
Consider other common indicators not shown in the image, such as phenolphthalein, which changes color in the pH range of 8.2 to 10.
Conclude that phenolphthalein would be a suitable indicator for detecting a pH change from 8 to 10.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Acid-Base Indicators
Acid-base indicators are substances that change color in response to changes in pH. They are typically weak acids or bases that exhibit different colors in their protonated and deprotonated forms. The choice of an indicator depends on the pH range over which it changes color, making it essential to select one that matches the expected pH change in a given reaction.
Video consigliato:
Percorso guidato
04:30
Acid-Base Indicators
pH Scale
The pH scale is a logarithmic scale that measures the acidity or basicity of a solution, ranging from 0 to 14. A pH of 7 is considered neutral, while values below 7 indicate acidity and values above 7 indicate basicity. Understanding the pH scale is crucial for selecting appropriate indicators, as each indicator has a specific pH range where it changes color.
Video consigliato:
Percorso guidato
02:33The pH Scale
Color Change Range of Indicators
Each acid-base indicator has a specific color change range that corresponds to a particular pH interval. For example, bromocresol green changes from yellow to blue between pH 3.8 and 5.4, while phenol red changes from yellow to red between pH 6.8 and 8.4. To detect a pH change from 8 to 10, it is important to choose an indicator that changes color within this range, ensuring accurate detection of the pH transition.
Video consigliato:
Percorso guidato
04:30Acid-Base Indicators
Pratica correlata
Domanda del libro di testo
Calculate the H3O+ concentration to the correct number of significant figures for solutions with the following pH values. (d) 14.25
686
views
Domanda del libro di testo
Calculate the H3O+ concentration to the correct number of significant figures for solutions with the following pH values. (e) -1.0
678
views
Domanda del libro di testo
Which of the indicators given in Figure 16.5, methyl violet, bromcresol green, phenol red, or thymolphthalein, would be most appropriate to detect a pH change from: (c) 2 to 0?
489
views