What is Redox Reaction
Redox reactions change the oxidation state of atoms by transferring electrons from one atom, a reducing agent, to another atom, which gains an electron, called an oxidizing agent. Here, the atom that donates electrons is oxidized, it loses electrons, and the atom that accepts electrons takes on less positive charge as it gains electrons.
Energy transfer in redox reactions depends on the ability of atoms to attract bonding electrons. their electronegativity. If the oxidizing agent is more electronegative than the reducing agent, energy is released. However, if the oxidizing agent is less electronegative than the reducing agent, a supply of energy is required.
The working agents are oxidizing
Is oxidation a loss or gain of electrons? The terminology can be confusing. The abbreviation OIL RIG is commonly used for memorization. (Types of Redox Reaction) This means oxidation loss is; Shortage is profit. Therefore, if an atom is oxidised, it loses electrons. As a reducing agent, an oxidized atom transfers electrons to another atom, causing it to be reduced. Considering OIL RIG, you can answer most questions about the participants in. the redox reaction.
Types of Redox Reaction
1. Intermolecular:- reactions in which oxidizing and reducing atoms occur in molecules of different substances for example:
2. Intramolecular:- reactions in which oxidizing and reducing atoms occur in molecules of the same substance, for example:
3. Disproportionation:- reactions in which atoms with an intermediate oxidation state are converted into an equatorial mixture of atoms with a higher and lower oxidation state:
Electronegativity and Energy
Redox reactions either generate energy or require energy. If an atom loses an electron in favor of a more electronegative atom, it is an energetically favorable reaction, and energy is released. It is very logical indeed, it seems that a stronger person wins a tug of war with a weaker person. Because a more electronegative atom has more ability to attract electrons to itself. A biological example of this type of reaction is cellular respiration, in which energy is released and used to make ATP, a form of energy that cells can readily use.
Other redox reactions require energy, not release. If an electron moves from a more electronegative atom to a less electronegative atom, energy must be used. It is similar to how a weak person wins a tug-of-war with a strong tug, it requires energy from an external source. A biological example is photosynthesis, in which electrons are transferred from water to carbon dioxide using energy in the form of light.
Incomplete Electron Transfer
The redox reaction can be accompanied not only by the transfer of an electron, but also with a change in the distribution of electrons in a covalent bond! For example, when methane and oxygen interact, they give carbon dioxide and water. In this case, carbon is oxidized to methane. This is because the electrons in methane are divided equally between carbon and hydrogen, whereas the carbon in carbon dioxide is partially positive, as oxygen attracts more electrons than carbon.
(What is Redox Reaction | Types of Redox Reaction)