Domanda del libro di testo
Predict the anode, cathode, and overall cell reactions when an aqueous solution of each of the following salts is electrolyzed in a cell having inert electrodes. (c) LiOH
455
views
Ch.19 - Electrochemistry
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 19, Problema 133
(a) Sketch a cell with inert electrodes suitable for the elec-trolysis of an aqueous solution of sulfuric acid. Label the anode and cathode, and indicate the direction of electron and ion flow. Identify the positive and negative electrodes. (b) Write balanced equations for the anode, cathode, and overall cell reactions.
Guida verificata passo dopo passo1
(a) Begin by sketching a simple electrochemical cell with two inert electrodes, such as platinum or graphite, immersed in an aqueous solution of sulfuric acid (H2SO4).
(a) Label the anode on the left side of the cell and the cathode on the right side. Remember, in electrolysis, the anode is positive and the cathode is negative.
(a) Indicate the direction of electron flow from the anode to the cathode through an external circuit. Also, show the flow of ions in the solution: H+ ions move towards the cathode, and SO4^2- ions move towards the anode.
(b) Write the half-reaction at the anode: 2H2O(l) → O2(g) + 4H+(aq) + 4e^-. This represents the oxidation of water to oxygen gas.
(b) Write the half-reaction at the cathode: 4H+(aq) + 4e^- → 2H2(g). This represents the reduction of protons to hydrogen gas. Combine these to write the overall cell reaction: 2H2O(l) → 2H2(g) + O2(g).
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:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
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 substance. In the case of sulfuric acid, water and sulfate ions are involved, leading to the production of hydrogen and oxygen gases at the electrodes.
Video consigliato:
Percorso guidato
01:21
The Electrolytic Cell
Electrodes and Their Functions
In electrolysis, electrodes are conductive materials that facilitate the flow of electricity into and out of the electrolyte. The anode is the positive electrode where oxidation occurs, while the cathode is the negative electrode where reduction takes place. Understanding the roles of these electrodes is crucial for predicting the products of the electrolysis process.
Video consigliato:
Percorso guidato
03:37Logarithmic Functions
Half-Reactions and Balancing Equations
Half-reactions represent the individual oxidation and reduction processes occurring at the electrodes during electrolysis. Balancing these half-reactions is essential to ensure that the number of atoms and charge are conserved in the overall reaction. This involves writing separate equations for the anode and cathode reactions and then combining them to form a balanced overall equation.
Video consigliato:
Percorso guidato
01:32Balancing Chemical Equations
Pratica correlata
Domanda del libro di testo
What products should be formed when the following reac-tants are electrolyzed in a cell having inert electrodes? Account for any differences.
(b) Aqueous KCl
328
views
Domanda del libro di testo
Predict the anode, cathode, and overall cell reactions when an aqueous solution of each of the following salts is electrolyzed in a cell having inert electrodes. (b) CuCl2
692
views
Domanda del libro di testo
Magnesium metal is produced by the electrolysis of molten magnesium chloride using inert electrodes.
(a) Sketch the cell, label the anode and cathode, indicate the sign of the electrodes, and show the direction of electron and ion flow.
2244
views
Domanda del libro di testo
Which of the following metals can offer cathodic protec-tion to iron? Select all the correct choices. Mn, Ni, Pb, Sn, Al
443
views
1
rank
Domanda del libro di testo
Zinc is attached to a ship's steel propeller to prevent the steel from rusting. Write balanced equations for the corro-sion reactions that occur (a) in the presence of Zn and (b) in the absence of Zn.
294
views