In the reaction between 2Li and Fe(C2H3O2)2, lithium (Li) acts as the reducing agent. This is because lithium donates electrons to the iron (Fe) in the iron acetate complex, reducing it from a higher oxidation state to elemental iron. As a result, lithium is oxidized while iron is reduced, producing 2LiC2H3O2 and Fe.
In this reaction, Br is the reducing agent because it is being oxidized from Br- to Br2, thereby causing the reduction of Ca from Ca to Ca2+.
S in (SO4)-2 has a charge of +6, in SO2 S has a charge of +4. To go from +6 to +4 you must gain two electrons. The (SO4)-2 is reduced (reduction is gaining electrons). Therefore it reduces the 2br-, so (SO4)-2 is the reducing agent
It is safer to claim it as neither - not least because the reaction would/does not work. Far safer to say that the sulphur is oxidised (which, you could argue, makes it a reducing agent).
Absallutly!
This is an oxidation-reduction reaction.
-1.68 V
The reaction CuO + CO → CO2 + Cu is an example of reduction because copper(II) oxide (CuO) gains electrons to form copper (Cu). Reduction is the gain of electrons by a species.
Magnesium is the oxidising agent.
Sound reduction plus better insulation
Yes, a reduction of silver can form Ag+ ions. When silver undergoes reduction, it loses one electron to form Ag+ ions, which have a positive charge.
In the reaction between potassium (K) and oxygen (O₂), potassium is oxidized and oxygen is reduced. Potassium loses electrons to form potassium ions (K⁺), while oxygen gains electrons to form oxide ions (O²⁻). This transfer of electrons defines the oxidation and reduction process, where oxidation refers to the loss of electrons and reduction refers to the gain of electrons. Thus, K is the reducing agent, and O₂ is the oxidizing agent in this reaction.
In the reaction between CuSO4 and Mg, magnesium (Mg) is oxidized while copper (Cu) is reduced. Magnesium loses electrons to form Mg²⁺ ions, indicating oxidation, while copper ions (Cu²⁺) gain electrons to form elemental copper, indicating reduction. Thus, Mg is the reducing agent and Cu²⁺ is the oxidizing agent in this reaction.