Question

ДОПИСАТЬ РЕАКЦИИ а) натрий + серная кислота б) оксид натрия + серная кислота в) гидроксид натрия + серная кислота

Answer 1

Ответ:

1) 2Na+H2SO4= Na2SO4 +2H2

2) Na2O+ H2SO4= H2O + Na2SO4

3) 2NaOH + H2SO4= Na2SO4 + 2H2O

Answer 2

Reactions of Sodium with Sulfuric Acid

When sodium reacts with sulfuric acid, several reactions can occur depending on the conditions and the reactants involved. Let's examine the reactions you mentioned:

a) Sodium + Sulfuric Acid: - When sodium reacts with sulfuric acid, it can produce sodium sulfate and hydrogen gas. - The balanced chemical equation for this reaction is: 2Na + H2SO4 → Na2SO4 + H2. - This reaction is a typical acid-base reaction, where sodium hydroxide (NaOH) is formed as an intermediate before reacting with sulfuric acid to form sodium sulfate. - The hydrogen gas is released as a byproduct of the reaction.

b) Sodium Oxide + Sulfuric Acid: - Sodium oxide (Na2O) is a basic oxide, and when it reacts with sulfuric acid, it forms sodium sulfate. - The balanced chemical equation for this reaction is: Na2O + H2SO4 → Na2SO4 + H2O. - This reaction is also an acid-base reaction, where sodium hydroxide is formed as an intermediate before reacting with sulfuric acid to form sodium sulfate. - Water is produced as a byproduct of the reaction.

c) Sodium Hydroxide + Sulfuric Acid: - Sodium hydroxide (NaOH) is a strong base, and when it reacts with sulfuric acid, it forms sodium sulfate and water. - The balanced chemical equation for this reaction is: 2NaOH + H2SO4 → Na2SO4 + 2H2O. - This reaction is an acid-base reaction, where sodium hydroxide reacts directly with sulfuric acid to form sodium sulfate and water.

Please note that the reactions mentioned above are simplified representations of the chemical processes involved. The actual reactions may involve intermediate steps and side reactions depending on the specific conditions.