Question

Газ выделяется при взаимодействии растворов ? 1) Сульфата калия и азотной кислоты . 2) Хлороводородной кислоты и гидроксида бария. 3) Азотной кислоты и сульфида натрия . 4) Карбоната натрия и гидроксида бария .

Answer 1

Добрый день.

Газ выделяется при взаимодействии растворов азотной кислоты и сульфида натрия.

Na₂S + 2HNO₃ = 2NaNO₃ + H₂S ↑

Answer 2

Gas Production from Interaction of Solutions

When solutions interact, gas can be produced as a result of chemical reactions. Let's examine the given pairs of solutions to determine which ones produce gas:

1) Sulfate of potassium and nitric acid 2) Hydrochloric acid and barium hydroxide 3) Nitric acid and sodium sulfide 4) Sodium carbonate and barium hydroxide

Let's analyze each pair to identify the gas produced.

1) Sulfate of potassium and nitric acid: - When potassium sulfate and nitric acid react, they produce potassium nitrate and water. No gas is produced in this reaction.

2) Hydrochloric acid and barium hydroxide: - When hydrochloric acid and barium hydroxide react, they produce barium chloride, water, and carbon dioxide gas.

3) Nitric acid and sodium sulfide: - When nitric acid and sodium sulfide react, they produce sodium nitrate, water, and nitrogen dioxide gas.

4) Sodium carbonate and barium hydroxide: - When sodium carbonate and barium hydroxide react, they produce barium carbonate, water, and no gas is produced in this reaction.

Based on the reactions, the correct pair that produces gas when the solutions interact is: 2) Hydrochloric acid and barium hydroxide.

Therefore, the correct answer is: Gas is produced when hydrochloric acid and barium hydroxide solutions interact.