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-
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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 81
Which of the following species behave as strong acids or strong bases in aqueous solution? (a) H- (b) O2- (c) H2SO4 (d) CsOH
Guida verificata passo dopo passo1
Step 1: Understand the definitions of strong acids and strong bases. Strong acids completely dissociate in water to produce H+ ions, while strong bases completely dissociate to produce OH- ions.
Step 2: Analyze each species. (a) H- is the hydride ion, which is not a strong acid or base. It can act as a base by accepting a proton to form H2.
Step 3: Analyze (b) O2-. The oxide ion is a strong base because it reacts with water to form OH- ions: O2- + H2O -> 2OH-.
Step 4: Analyze (c) H2SO4. Sulfuric acid is a strong acid because it completely dissociates in water to form H+ and HSO4- ions: H2SO4 -> H+ + HSO4-.
Step 5: Analyze (d) CsOH. Cesium hydroxide is a strong base because it completely dissociates in water to form Cs+ and OH- ions: CsOH -> Cs+ + OH-.
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Strong Acids and Bases
Strong acids are substances that completely dissociate in water, releasing all their hydrogen ions (H+), while strong bases completely dissociate to release hydroxide ions (OH-). This complete ionization results in a high concentration of H+ or OH- in solution, leading to a significant change in pH. Common examples include hydrochloric acid (HCl) for strong acids and sodium hydroxide (NaOH) for strong bases.
Video consigliato:
Percorso guidato
01:09
Strong Acid-Strong Base Titration
Acid-Base Theory
Acid-base theory, particularly the Brønsted-Lowry theory, defines acids as proton donors and bases as proton acceptors. This framework helps in identifying the behavior of various species in aqueous solutions. For instance, H2SO4 is a strong acid because it donates protons readily, while CsOH is a strong base as it accepts protons effectively in solution.
Video consigliato:
Percorso guidato
02:08Bronsted-Lowry Acid-Base Theory
Aqueous Solution Behavior
In aqueous solutions, the behavior of acids and bases is influenced by their ability to interact with water molecules. Strong acids and bases will significantly alter the concentration of H+ and OH- ions in the solution, respectively. Understanding this behavior is crucial for predicting the pH and reactivity of the solution, which is essential for answering questions about acid-base strength.
Video consigliato:
Percorso guidato
01:11Types of Aqueous Solutions
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