Oxidation involve loss of electrons and reduction involve gain of electrons.
An element that increases its oxidation number in a reaction has been oxidized. This means it loses electrons or gains a more positive oxidation state. You can determine which element is oxidized by comparing the oxidation numbers of the element in the reactants and products of the reaction.
Sodium (Na) is oxidized in the reaction to form sodium bromide (NaBr). In this reaction, sodium goes from an oxidation state of 0 to +1, indicating that it has lost an electron and been oxidized.
Silver cations are reduced.
In this redox reaction, silver nitrate (AgNO3) is reacting with sodium (Na) to form sodium nitrate (NaNO3) and silver (Ag). The sodium is getting oxidized (losing electrons) while the silver in silver nitrate is getting reduced (gaining electrons).
In this reaction, silver (Ag) has been oxidized. This is because silver changes from an oxidation state of 0 in Ag metal to an oxidation state of +1 in AgNO3. Oxidation involves the loss of electrons.
The reactant that reduces another atom
An element that increases its oxidation number in a reaction has been oxidized. This means it loses electrons or gains a more positive oxidation state. You can determine which element is oxidized by comparing the oxidation numbers of the element in the reactants and products of the reaction.
Sodium (Na) is oxidized in the reaction to form sodium bromide (NaBr). In this reaction, sodium goes from an oxidation state of 0 to +1, indicating that it has lost an electron and been oxidized.
Sodium (Na) has been reduced.
Silver cations are reduced.
In this redox reaction, silver nitrate (AgNO3) is reacting with sodium (Na) to form sodium nitrate (NaNO3) and silver (Ag). The sodium is getting oxidized (losing electrons) while the silver in silver nitrate is getting reduced (gaining electrons).
Silver (Ag)
In this reaction, silver (Ag) has been oxidized. This is because silver changes from an oxidation state of 0 in Ag metal to an oxidation state of +1 in AgNO3. Oxidation involves the loss of electrons.
In the redox reaction, silver (Ag) has been reduced because it gains electrons in forming solid silver (Ag) from silver nitrate (AgNO3).
Fe(s) + 3AgNO3 ---> Fe(NO3)3 + Ag(s) The oxidation # of Ag on the left is 1+ and on the right it is zero. It has gained electrons and has been reduced.
A chlorine atom gains an electron when it becomes an ion. This means it has been reduced because there is a decrease in oxidation state from 0 to -1.
When a molecule gains an electron, it has been reduced.