Question

. Используя метод электронного баланса, расставьте коэффициенты в уравнении реакции, схема которой H₂SO₄+Zn→ZnSO₄+S+H₂O Определите окислитель и восстановитель.

Answer 1

Ответ:

Объяснение:

4H2SO4 + 3Zn = 3ZnSO4 + S + 4H2O

S(+6) +6e = S(0)       1    в-ие

ок-ль

Zn(0) -2e = Zn(+2)    3   ок-ие

в-ль

Answer 2

Balancing the Equation:

To balance the equation using the electronic balance method, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The given equation is: H₂SO₄ + Zn → ZnSO₄ + S + H₂O

Let's start by balancing the elements that appear in more than one compound. In this case, we have sulfur (S) and oxygen (O).

1. Balancing sulfur (S): - There is one sulfur atom on the left side and one on the right side. - The sulfur is already balanced.

2. Balancing oxygen (O): - There are four oxygen atoms on the left side (two in H₂SO₄ and two in H₂O). - There are four oxygen atoms on the right side (four in ZnSO₄). - The oxygen is already balanced.

Now, let's balance the remaining elements.

3. Balancing hydrogen (H): - There are two hydrogen atoms on the left side (two in H₂SO₄). - There are two hydrogen atoms on the right side (two in H₂O). - The hydrogen is already balanced.

4. Balancing zinc (Zn): - There is one zinc atom on the left side (in Zn). - There is one zinc atom on the right side (in ZnSO₄). - The zinc is already balanced.

The balanced equation is: H₂SO₄ + Zn → ZnSO₄ + S + H₂O.

Identifying the Oxidizing and Reducing Agents:

To determine the oxidizing and reducing agents in the reaction, we need to look at the changes in oxidation states of the elements involved.

In the given reaction: H₂SO₄ + Zn → ZnSO₄ + S + H₂O

- Zinc (Zn) is oxidized from an oxidation state of 0 to +2 in ZnSO₄. Therefore, zinc is the reducing agent because it loses electrons and is oxidized. - Sulfur (S) is reduced from an oxidation state of +6 in H₂SO₄ to 0 in S. Therefore, sulfur is the oxidizing agent because it gains electrons and is reduced.

To summarize: - The reducing agent is zinc (Zn). - The oxidizing agent is sulfur (S).

Please let me know if there is anything else I can help you with!