Question

3. Напишите реакции взаимодействия соли с кислотой, соли с солью и соли со щелочью. Составьте уравнения в молекулярном и ионном виде

Answer 1

H2SO4 + 2 NaCl -> Na2SO4 + 2HCl (При температуре)
NaNO3 + CuSO4 -> Cu(NO3)2 + Na2SO4 (с катализатором) 
СuSO4 +2NaOH -> Cu(OH)2 + Na2SO4

Answer 2

Reactions of Salts with Acid, Salt, and Alkali

When salts interact with acids, salts, and alkalis, various reactions can occur. Let's explore the reactions and their corresponding molecular and ionic equations.

Interaction of Salt with Acid: When a salt interacts with an acid, the following reaction can occur:

Molecular Equation: ``` 2 HCl(aq) + Na2CO3(aq) → 2 NaCl(aq) + H2O(l) + CO2(g) ```

Ionic Equation: ``` 2 H+(aq) + 2 Cl-(aq) + 2 Na+(aq) + CO3^2-(aq) → 2 Na+(aq) + 2 Cl-(aq) + H2O(l) + CO2(g) ```

Interaction of Salt with Salt: When salts interact with each other, the reaction depends on the specific salts involved. For example, when potassium hydroxide (KOH) interacts with ammonium chloride (NH4Cl), the following reaction occurs:

Molecular Equation: ``` KOH(aq) + NH4Cl(aq) → KCl(aq) + NH3(g) + H2O(l) ```

Ionic Equation: ``` K+(aq) + OH-(aq) + NH4+(aq) + Cl-(aq) → K+(aq) + Cl-(aq) + NH3(g) + H2O(l) ```

Interaction of Salt with Alkali: When a salt interacts with an alkali, the reaction can be represented by the following example:

Molecular Equation: ``` Fe(NO3)3(aq) + 3 NaOH(aq) → Fe(OH)3(s) + 3 NaNO3(aq) ```

Ionic Equation: ``` Fe^3+(aq) + 3 NO3^-(aq) + 3 Na+(aq) + 3 OH-(aq) → Fe(OH)3(s) + 3 Na+(aq) + 3 NO3^-(aq) ```

These reactions demonstrate the diverse interactions that salts can undergo when in contact with acids, other salts, and alkalis. If you have further questions or need more examples, feel free to ask!