Question

Heeeeeelp!!!!!1.Составьте схему электролиза расплава силиката натрия 2.Составьте схему электролиза водного раствора сульфата цинка Буду очень благодарна если поможете

Answer 1

Схема электролиза расплава Na₂SiO₃  на инертном аноде.
Na₂SiO₃ ⇔2Na⁺ + SiO₃²⁻
K(-): 2Na+ +2e =2Na⁰
A(+): 2SiO₃²⁻ −4e =2SiO₂+O₂
Вывод: 2Na₂SiO₃ → (электролиз) 4Na + 2SiO₂ + O₂
 
 Схема электролиза водного раствора ZnSO4  на инертном аноде.   На катоде восстанавливается цинк, а на аноде идет окисление воды с выделением кислорода. В растворе остаются ионы Н⁺ и SO4²⁻,  накапливается серная кислота.
ZnSO₄ ⇔ Zn²⁺ + SO₄²⁻
H₂O⇔H⁺ + OH⁻
катод (-) Zn²⁺ + 2e⁻  ⇒ Zn⁰     
анод (+) 2OH⁻ – 2е⁻=  2OH       2OH⁻=H₂O+O       2O=O₂ 
 Вывод: 2ZnSO₄ + 2H₂O (электролиз) = 2Zn + 2H₂SO₄ + O₂

Answer 2

Electrolysis of Sodium Silicate Melting

The electrolysis of sodium silicate melting involves the decomposition of sodium silicate (Na2SiO3) into its constituent elements, sodium (Na) and silicon (Si), using an electric current. Here is a schematic representation of the electrolysis process:

1. Electrolyte: Sodium silicate (Na2SiO3) is used as the electrolyte in the form of a molten mixture.

2. Electrodes: Two electrodes are immersed in the molten sodium silicate electrolyte: - Anode: The anode is typically made of carbon or graphite and is connected to the positive terminal of the power supply. - Cathode: The cathode is usually made of iron or steel and is connected to the negative terminal of the power supply.

3. Electrolysis Process: - At the anode: Oxidation occurs, where oxygen (O2) is evolved. The oxygen reacts with the carbon anode to form carbon dioxide (CO2). - At the cathode: Reduction occurs, where sodium (Na) and silicon (Si) are produced. The sodium ions (Na+) migrate towards the cathode and are reduced to sodium metal (Na). The silicon ions (SiO3^2-) migrate towards the cathode and are reduced to silicon metal (Si).

4. Overall Reaction: - The overall reaction can be represented as follows: 2Na2SiO3(l) → 4Na(l) + 2Si(l) + 3O2(g)

Electrolysis of Zinc Sulfate Solution

The electrolysis of a zinc sulfate (ZnSO4) solution involves the decomposition of zinc sulfate into its constituent elements, zinc (Zn) and oxygen (O2), using an electric current. Here is a schematic representation of the electrolysis process:

1. Electrolyte: Zinc sulfate (ZnSO4) is dissolved in water to form a zinc sulfate solution. The concentration of the solution may vary.

2. Electrodes: Two electrodes are immersed in the zinc sulfate solution: - Anode: The anode is typically made of platinum or carbon and is connected to the positive terminal of the power supply. - Cathode: The cathode is usually made of zinc and is connected to the negative terminal of the power supply.

3. Electrolysis Process: - At the anode: Oxidation occurs, where water molecules (H2O) are oxidized to form oxygen gas (O2) and hydrogen ions (H+). The hydrogen ions react with the sulfate ions (SO4^2-) from the zinc sulfate to form sulfuric acid (H2SO4). - At the cathode: Reduction occurs, where zinc ions (Zn^2+) migrate towards the cathode and are reduced to zinc metal (Zn).

4. Overall Reaction: - The overall reaction can be represented as follows: ZnSO4(aq) → Zn(s) + O2(g) + H2SO4(aq)

Please note that the specific conditions and materials used in electrolysis may vary depending on the setup and purpose of the experiment.