It is a non-spontaneous process in which the passage of an electric current through a liquid system, where there are ions, producing chemical reactions. Electrolysis is performed in electrolytic vats, in which electric current is produced by anode graphite (battery).
- In this system, the electrodes are usually inert, formed by platinum or graphite (coal).
- Substances that will undergo electrolysis may be liquefied (molten) or in aqueous solution.
Definition of electronic potential:
When a voltmeter or other voltage device is connected to a galvanic cell, it indicates an electrical potential difference. We call this voltage difference or potential produced by the cell and assign it the positive algebraic signal. The + sign indicates that the cell reaction unfolds spontaneously.
Electrolysis Cell Differentiation:
A cell is any device in which a spontaneous oxy-reduction reaction produces electric current whereas Electrolysis is a non-spontaneous oxy-reduction reaction produced by the passage of electric current.
Electrochemistry, battery and electrolysis are subjects that have fallen a lot in ENEM. Virtually every year they show up.
These are easy and enjoyable subjects to study. This is because their theory is very logical and the subjects of calculations are simple.
In this article, we will show you, directly, what you need to know and what is actually charged to the exams. We will show you:
- What is electrochemistry
- What is studied in electrochemistry
- What is most charged for electrochemistry in the tests
- The banana peels you can’t fall into
How was the electrochemistry charged to the enemy
In the end, we will tell you how you can send me questions for me to solve especially for you.
If you found the purpose of this article interesting, stay with me until the end and share it with your friends on your social networks.
This interaction can be done in two ways:
- The chemical reaction generating electric current
- Electric current inducing a chemical reaction
When the chemical reaction is capable of generating an electric current, we are talking about the cell. When electric current is capable of inducing, that is, promoting a chemical reaction, which of course would not happen, we are talking about electrolysis. Electrochemistry, therefore, studies batteries and electrolysis.
What do you study in electrochemistry?
As stated above, electrochemistry studies:
- Batteries: chemical reaction generating electric current
- Electrolysis: Electric current inducing chemical reactions
In practice, these issues are applicable to battery generation in general, used in electrical and electronic equipment, automobiles, etc.
Electrolysis is the most common industrial way of obtaining metallic components for industry. It is also used as a method for obtaining industrial gases.
What is most charged to the tests?
We will report here the points most charged in entrance exams, then explain each of them.
- Reduction Potential (E ° red)
- How to recognize a reduction half-reaction
- Cathode and Anode Determination
- Determination of stack DDP (potential difference)
- Oxidizing Agent and Reducing Agent
- Cathode and anode reactions
- The volume of gas produced in an electrode
- Mass deposited or consumed on an electrode
- I’ll explain each item to you, let’s go?
Electrochemistry – Batteries
The battery is a device that generates electrical current from chemicals. The main idea is that when you have 2 substances that can pull electrons differently, there is bound to be an electron exchange between these substances. That is, that stronger substance will be able to steal the electrons from the weaker substance, and there will be an electron transfer between the substances. We say there will be an Oxidation and Reduction reaction.