Question

Электронный баланс и расставить коэффициенты. FeCl2+Cl2 ->FeCl3

Answer 1

Fe+2 ,Cl-1,Cl2-0=Fe+3,Cl-1

Answer 2

Electrochemical Balancing of the Equation FeCl2 + Cl2 -> FeCl3

To balance the given equation FeCl2 + Cl2 -> FeCl3, we need to consider the transfer of electrons during the reaction. This process is known as electrochemical balancing.

The balanced equation for the reaction can be achieved by following these steps:

Step 1: Identify the oxidation states of each element in the reaction.

In FeCl2, the oxidation state of Fe is +2, and the oxidation state of Cl is -1. In Cl2, the oxidation state of Cl is 0. In FeCl3, the oxidation state of Fe is +3, and the oxidation state of Cl is -1.

Step 2: Determine the half-reactions for the oxidation and reduction processes.

The half-reaction for the oxidation process involves the element that increases in oxidation state. In this case, Cl2 is oxidized to Cl- ions. The half-reaction is:

Cl2 -> 2 Cl- (oxidation)

The half-reaction for the reduction process involves the element that decreases in oxidation state. In this case, Fe2+ ions are reduced to Fe3+ ions. The half-reaction is:

Fe2+ -> Fe3+ + e- (reduction)

Step 3: Balance the number of atoms and charges in each half-reaction.

To balance the number of atoms, we need to add coefficients in front of the reactants and products. To balance the charges, we need to add electrons (e-) to one side of the equation.

The balanced half-reactions are:

Oxidation half-reaction: Cl2 -> 2 Cl- + 2 e-

Reduction half-reaction: Fe2+ -> Fe3+ + e-

Step 4: Multiply the half-reactions by appropriate coefficients to balance the number of electrons transferred.

To balance the number of electrons transferred, we need to multiply the oxidation half-reaction by 2 and the reduction half-reaction by 1.

The balanced half-reactions become:

2 Cl2 -> 4 Cl- + 4 e- 2 Fe2+ -> 2 Fe3+ + 2 e-

Step 5: Combine the balanced half-reactions to obtain the balanced overall equation.

To obtain the balanced overall equation, we add the two balanced half-reactions together:

2 Cl2 + 2 Fe2+ -> 4 Cl- + 2 Fe3+

This is the balanced equation for the reaction FeCl2 + Cl2 -> FeCl3.

Please note that the coefficients in front of the reactants and products may be simplified further, but this is the balanced equation based on the transfer of electrons.