sodium, Na is oxidized
Aluminium.
oxygen
Carbon
In the reaction MnO2 + 4HCl -> MnCl2 + Cl2 + 2H2O, manganese in MnO2 is getting oxidized from +4 to +2 (in MnCl2). Chloride ions in HCl are being reduced to chlorine gas (Cl2).
No. Hydrogen reacts with oxygen to yield water.
In other words: 3x+y=2z+a x+3y=2b+3a z+y=3c+a (all equals:) c+y=b+a
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.
Fe
When potassium bromide (KBr) reacts with chlorine gas (Cl2), it forms potassium chloride (KCl) and bromine (Br2). This reaction is a redox reaction, with bromide ions being oxidized to bromine gas and chlorine being reduced to chloride ions.
The chemical equation for this reaction is: 2 AlBr3 + 3 Cl2 -> 2 AlCl3 + 3 Br2 It is a redox reaction where aluminum bromide is oxidized to aluminum chloride and chlorine is reduced to bromine.
In the redox reaction between silver nitrate (AgNO3) and a reducing agent, silver (Ag) is oxidized. This occurs because silver loses electrons during the reaction, leading to its conversion from Ag+ in AgNO3 to elemental Ag. Thus, the element that has been oxidized in this reaction is the silver ion (Ag+).
Sn4+ is fully oxidised, Sn2+ only half