Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:The image illustrates the electrolysis of molten lead(II) chloride (PbCl₂). The diagram features the following components:
1. **Voltage Source**: Positioned at the top, supplying electrical energy to the system.
2. **Anode (Left Side)**: This electrode is connected to the positive terminal of the voltage source. Electrons are shown moving away from the anode towards the cathode.
3. **Cathode (Right Side)**: Connected to the negative terminal, electrons move towards this electrode.
4. **Porous Screen**: Located between the anode and cathode, likely serving to separate the products formed during electrolysis.
5. **Molten PbCl₂**: The electrolyte in which the electrolysis occurs, represented as the medium filling the container.
The diagram implies that at the anode, chloride ions (Cl⁻) lose electrons and form chlorine gas, while at the cathode, lead ions (Pb²⁺) gain electrons to form lead metal.
![**Electrolysis of Molten Lead(II) Chloride (PbCl₂)**
To determine the minimum voltage required for electrolysis to occur in a cell containing molten PbCl₂, it is crucial to understand the breakdown of this compound during the electrolysis process.
**Text:**
"Determine the minimum voltage that must be applied to a cell containing molten PbCl₂ in order for electrolysis to occur."
- [ ] V (Input box for the voltage value)
**Explanation:**
Electrolysis involves driving a non-spontaneous chemical reaction with electricity. For molten PbCl₂, the electrolytic process will result in the decomposition of PbCl₂ into lead (Pb) and chlorine gas (Cl₂). The minimum voltage required, also known as the decomposition potential, depends on the half-reactions at the electrodes and their standard electrode potentials. By summing the potentials of the oxidation and reduction half-reactions, one can calculate the minimum voltage necessary for the electrolysis of molten PbCl₂ to proceed.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F372fa12f-43eb-4492-9430-9bd1a2d234d6%2F0f141fff-9e9f-471b-8de0-57f004c4ad53%2Fwer25bo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Electrolysis of Molten Lead(II) Chloride (PbCl₂)**
To determine the minimum voltage required for electrolysis to occur in a cell containing molten PbCl₂, it is crucial to understand the breakdown of this compound during the electrolysis process.
**Text:**
"Determine the minimum voltage that must be applied to a cell containing molten PbCl₂ in order for electrolysis to occur."
- [ ] V (Input box for the voltage value)
**Explanation:**
Electrolysis involves driving a non-spontaneous chemical reaction with electricity. For molten PbCl₂, the electrolytic process will result in the decomposition of PbCl₂ into lead (Pb) and chlorine gas (Cl₂). The minimum voltage required, also known as the decomposition potential, depends on the half-reactions at the electrodes and their standard electrode potentials. By summing the potentials of the oxidation and reduction half-reactions, one can calculate the minimum voltage necessary for the electrolysis of molten PbCl₂ to proceed.
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