Question

Натрий растворили в воде. Раствор нейтрализовали серной кислотой и добавили хлорид бария. Осадок отфильтровали, раствор выпарили. Твердый остаток расплавили и пропустили через расплав электрический ток. Напишите уравнения описанных реакций Срочнооооооо

Answer 1

2Na+2HOH=2NaOH+Н2
2NaOH+H2SO4=Na2SO4+2HOH
Na2SO4 +BaCl2=2NaCl+BaSO4
Выпаривание(без реакции)
2NaCl---(ток)=2Na+Cl2

Answer 2

Reaction 1: Sodium dissolving in water

When sodium is dissolved in water, it reacts with water molecules to form sodium hydroxide (NaOH) and hydrogen gas (H2). The balanced chemical equation for this reaction is:

2Na + 2H2O -> 2NaOH + H2

Reaction 2: Neutralization of sodium hydroxide with sulfuric acid

The sodium hydroxide solution obtained from the previous reaction is then neutralized with sulfuric acid (H2SO4). The reaction between sodium hydroxide and sulfuric acid produces sodium sulfate (Na2SO4) and water (H2O). The balanced chemical equation for this reaction is:

2NaOH + H2SO4 -> Na2SO4 + 2H2O

Reaction 3: Formation of barium sulfate precipitate

After neutralizing the sodium hydroxide solution, barium chloride (BaCl2) is added to the solution. This results in the formation of a white precipitate of barium sulfate (BaSO4) due to the reaction between barium ions (Ba2+) and sulfate ions (SO4^2-). The balanced chemical equation for this reaction is:

BaCl2 + Na2SO4 -> BaSO4 + 2NaCl

Reaction 4: Evaporation of the solution

The solution obtained after the formation of the barium sulfate precipitate is then evaporated to remove the water. This process allows the solid residue to be obtained.

Reaction 5: Electrolysis of the solid residue

The solid residue obtained from the evaporation is then melted and subjected to electrolysis. Electrolysis involves passing an electric current through a molten or dissolved compound to produce chemical reactions. The specific reactions that occur during the electrolysis of the solid residue will depend on the composition of the residue. Unfortunately, the search results did not provide specific information about the composition of the solid residue or the electrolysis reactions involved.

Please note that the specific conditions and details of the reactions may vary depending on the concentration and temperature of the solutions used.