what is oxidation and reduction in terms of loose and gain of electron ??
Answers
Answer:
Oxidation is the loss of electrons or an increase in the oxidation state of an atom, an ion, or of certain atoms in a molecule. Reduction is the gain of electrons or a decrease in the oxidation state of an atom, an ion, or of certain atoms in a molecule.
Answer:
Oxidation and reduction can be defined on following bases:
Association or decomposition of oxygen: When oxygen is added to a substance, the substance is said to be oxidized. When oxygen is removed from a substance, the substance is said to be reduced. In other words, addition of oxygen is called oxidation and removal of oxygen is called reduction.
Example: 2Mg+O2 →2MgO
Association of hydrogen: When hydrogen is added to a substance, the substance is said to be reduced. When hydrogen is removed from a substance, the substance is said to be oxidized. In other words, addition of hydrogen is called reduction and removal of hydrogen is called oxidation.
Example: 2H2S+O2 →2H2O+2S
Association or decomposition of electropositive elements: Addition of electronegative element to a substance is called oxidation. Removal of electronegative element from a substance is called reduction.
Example: 2FeCl3 + H2 →2FeCl2 +2HCl
Exchange of electrons: When an element loses electrons, it results in oxidation of that element. When an element gains electrons, its results in reduction of that element. Example: Na→Na+ +e−,2Cl− →Cl2 +2e −