Domanda del libro di testo
Describe the structure of the sulfur molecules in:
(a) Rhombic sulfur (b) Monoclinic sulfur(c) Plastic sulfur (d) Liquid sulfur above 160 °C
Ch.22 - The Main Group Elements
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 22, Problema 132
Write a balanced net ionic equation for the reaction of the amphoteric oxide ZnO with aqueous sodium hydroxide. [The product is Zn(OH)4^2-.]
Guida verificata passo dopo passo1
Identify the reactants and products in the reaction: ZnO (s) and NaOH (aq) react to form Zn(OH)_4^{2-} (aq).
Write the balanced molecular equation for the reaction: ZnO (s) + 2 NaOH (aq) → Na_2Zn(OH)_4 (aq).
Dissociate all strong electrolytes into their ions: NaOH dissociates into Na^+ and OH^-, and Na_2Zn(OH)_4 dissociates into 2 Na^+ and Zn(OH)_4^{2-}.
Write the complete ionic equation by showing all ions separately: ZnO (s) + 2 Na^+ (aq) + 2 OH^- (aq) → 2 Na^+ (aq) + Zn(OH)_4^{2-} (aq).
Cancel out the spectator ions (ions that appear on both sides of the equation) to write the net ionic equation: ZnO (s) + 2 OH^- (aq) → Zn(OH)_4^{2-} (aq).
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Amphoteric Oxides
Amphoteric oxides are compounds that can react with both acids and bases. They exhibit dual behavior, meaning they can either donate protons (acting as acids) or accept protons (acting as bases). Zinc oxide (ZnO) is a classic example, as it can react with strong bases like sodium hydroxide to form complex ions.
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Percorso guidato
03:03
Amphoteric Species
Net Ionic Equations
A net ionic equation represents the chemical species that are actually involved in a reaction, omitting the spectator ions that do not participate. To write a net ionic equation, one must first write the balanced molecular equation, then dissociate the soluble strong electrolytes into their ions, and finally eliminate the spectator ions to focus on the core reaction.
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Percorso guidato
00:51Net Ionic Equations
Complex Ion Formation
Complex ions are formed when a central metal ion binds with one or more ligands, which are molecules or ions that can donate electron pairs. In this case, the reaction of ZnO with sodium hydroxide leads to the formation of the complex ion Zn(OH)4^2-, where zinc is the central metal ion coordinated by hydroxide ligands, illustrating the interaction between metal oxides and hydroxides.
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Percorso guidato
02:20Complex Ions and Formation Constant