Domanda del libro di testo
(d) Why are active metals such as Al obtained by electrolysis using molten salts rather than aqueous solutions?
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Ch.20 - Electrochemistry
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 20, Problema 89c
(c) What process occurs at the anode in the electrolysis of molten NaCl?
Guida verificata passo dopo passo1
Identify the components involved in the electrolysis of molten NaCl: sodium ions (Na^+) and chloride ions (Cl^-).
Understand that electrolysis involves the movement of ions towards electrodes: cations move to the cathode and anions move to the anode.
Recognize that at the anode, oxidation occurs, which involves the loss of electrons by anions.
Write the half-reaction for the oxidation of chloride ions at the anode: \( 2\text{Cl}^- \rightarrow \text{Cl}_2 + 2e^- \).
Conclude that chlorine gas (Cl_2) is produced at the anode as a result of the oxidation of chloride ions.
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Electrolysis
Electrolysis is a chemical process that uses electrical energy to drive a non-spontaneous reaction. In this process, an electric current is passed through an electrolyte, causing the decomposition of the compound into its constituent elements. This is commonly used in the extraction of metals and the production of chemical compounds.
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Percorso guidato
01:21
The Electrolytic Cell
Anode Reaction
The anode is the electrode where oxidation occurs during electrolysis. In the case of molten NaCl, chloride ions (Cl-) are oxidized at the anode, releasing chlorine gas (Cl2). This reaction is crucial as it illustrates the transfer of electrons and the conversion of ions into neutral atoms or molecules.
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01:30Alcohol Reactions: Dehydration Reactions
Ionic Compounds in Electrolysis
Ionic compounds, like sodium chloride (NaCl), dissociate into their respective ions when melted or dissolved in water. During electrolysis, these ions migrate towards the electrodes, where they undergo oxidation or reduction. Understanding the behavior of these ions is essential for predicting the products formed during the electrolysis process.
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02:11Ionic Compounds Naming
Pratica correlata
Domanda del libro di testo
(d) Why is sodium metal not obtained when an aqueous solution of NaCl undergoes electrolysis?
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Domanda del libro di testo
Copper corrodes to cuprous oxide, Cu2O, or cupric oxide, CuO, depending on environmental conditions. (c) Copper peroxide is another oxidation product of elemental copper. Suggest a formula for copper peroxide based on its name. (d) Copper(III) oxide is another unusual oxidation product of elemental copper. Suggest a chemical formula for copper(III) oxide.
Domanda del libro di testo
(a) A Cr3+(aq) solution is electrolyzed, using a current of 7.60 A. What mass of Cr(s) is plated out after 2.00 days?
493
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Domanda del libro di testo
Copper corrodes to cuprous oxide, Cu2O, or cupric oxide, CuO, depending on environmental conditions. (a) What is the oxidation state of copper in cuprous oxide?
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