in a galvanic cell, there is a non-spontaneous process, in which the cathode is the negative pole and the anode is the positive pole.

in an electrolysis process, electrons flow from the cathode to the anode in a spontaneous process.

in a galvanic cell, the spontaneous reaction has a negative value of 

, with energy generation in the form of work.

in a galvanic cell, electrical energy is converted into chemical energy through a non-spontaneous process.

in an electrolysis process, electrical energy is converted into chemical energy through a non-spontaneous process.

In line with what is mentioned in text I, also from the perspective of thermodynamics, non-spontaneous work must be done to combat disorder. Chemical systems that exploit oxidation-reduction reactions can perform spontaneous or non-spontaneous work. Regarding chemical reactions in batteries and in electrolysis processes of aqueous solutions and molten compounds, choose the correct alternative.

Chemistry

The correct alternative is:

c) in an electrolysis process, electrical energy is converted into chemical energy through a non-spontaneous process.

Step-by-step explanation:

1. **Understanding Galvanic (or Voltaic) Cells:**
   - A galvanic cell is a device that converts chemical energy into electrical energy through a spontaneous redox reaction.
   - In it, the cathode is the positive pole where reduction occurs, and the anode is the negative pole where oxidation occurs.
   - The spontaneous reaction has a positive standard electrode potential (

).

2. **Understanding Electrolysis:**
   - Electrolysis is the reverse process of the galvanic cell. It requires the application of external electrical energy to force a non-spontaneous chemical reaction.
   - During electrolysis, electrons are forced to flow from the anode to the cathode, the opposite of what happens in a galvanic cell.
   - The cathode is the negative pole (where reduction occurs) and the anode is the positive pole (where oxidation occurs) in an electrolysis process.

3. **Analyzing the Alternatives:**
   - Alternative (a) is incorrect because, in an electrolysis process, electrons flow from the anode to the cathode, and the process is not spontaneous.
   - Alternative (b) is incorrect because, in a galvanic cell, chemical energy is converted into electrical energy through a spontaneous process.
   - Alternative (c) is correct because it correctly describes electrolysis, where electrical energy is used to perform a non-spontaneous chemical work.
   - Alternative (d) is incorrect because, in a galvanic cell, the spontaneous reaction has a positive value of 

, not negative.
   - Alternative (e) is incorrect because, in a galvanic cell, the process is spontaneous, the cathode is the positive pole, and the anode is the negative pole.

Therefore, the correct alternative is (c), which states that in an electrolysis process, electrical energy is converted into chemical energy through a non-spontaneous process.

Question about Electrochemistry: Introduction

Subject Chemistry

Chemistry

Source UEL

UEL

Topic Electrochemistry: Introduction

Electrochemistry: Introduction

Difficulty Medium

Medium

(UEL 2016) - Question Medium of Chemistry