Question

AL+HCL=ALCL3+H2 Расставить коэффиценты с помощью ОВР.

Answer 1

2Al (заряд 0, потому что простое вещество) + 6HCl (заряд +1 и -1 соответственно) = 2Al$Cl_{3}$ (заряд +3 и -1) + 3$H_{2}$ (заряд 0)

Answer 2

Balancing the Chemical Equation: Al + HCl = AlCl3 + H2

To balance the chemical equation Al + HCl = AlCl3 + H2 using the method of oxidation-reduction (redox) reactions, we can follow these steps:

1. Identify the oxidation numbers of each element in the equation. 2. Write the half-reactions for the oxidation and reduction processes. 3. Balance the atoms and charges in each half-reaction. 4. Combine the half-reactions and simplify if necessary.

Let's proceed with balancing the given chemical equation using the oxidation-reduction method.

Balancing Steps:

1. Identify the Oxidation Numbers: - Aluminum (Al) has an oxidation number of 0 in its elemental form. - Hydrogen (H) has an oxidation number of +1 in HCl. - Chlorine (Cl) has an oxidation number of -1 in HCl. - Aluminum (Al) has an oxidation number of +3 in AlCl3.

2. Write the Half-Reactions: The oxidation half-reaction: ``` Al → Al^3+ + 3e^- ``` The reduction half-reaction: ``` 2H^+ + 2e^- → H2 ```

3. Balance the Atoms and Charges in Each Half-Reaction: - The oxidation half-reaction is already balanced. - To balance the reduction half-reaction, we need to multiply the entire equation by 3 to balance the hydrogen atoms: ``` 6H^+ + 6e^- → 3H2

4. Combine the Half-Reactions: By adding the two half-reactions together, we get the balanced chemical equation: ``` 2Al + 6HCl → 2AlCl3 + 3H2 ```

Therefore, the balanced chemical equation for the reaction Al + HCl = AlCl3 + H2 using the oxidation-reduction method is: 2Al + 6HCl → 2AlCl3 + 3H2.