Question

В молекулярном уравнении – расставьте коэффициенты, замените стрелку знаком равенства. Составьте полные и сокращенные ионные уравнения реакции. Укажите причину протекания каждой реакции (образование осадка, газообразного вещества, воды). помогите срочно 1. K2SO3+HNO3 → 2.CaCO3+HCl → 3.NaOH+HNO3 → 4. ВаCl2+Н2SO4 → 5.NaOH+CuCl2 →

Answer 1

K2SO3 + 2HNO3 = 2KNO3 + H2O + SO2
2K⁺ + SO₃²⁻ + 2H⁺ + NO₃⁻ = 2K⁺ + 2NO₃⁻ + H₂O + SO₂
SO₃²⁻ + 2H⁺  =  H₂O + SO₂ выделяется газ

CaCO₃ + 2HCl = CaCl₂ + H₂O + CO₂
CaCO₃ + 2H⁺ + 2Cl⁻ = Ca²⁺ + 2Cl⁻ + H₂O + CO₂
CaCO₃ + 2H⁺ ⁻ = Ca²⁺ + H₂O + CO₂ выделяется газ
 
NaOH + HNO₃ = NaNO₃ + H₂O
Na⁺ + OH⁻ + H⁺ + NO₃⁻ = Na⁺ + NO₃⁻ + H₂O
OH⁻ + H⁺ ⁻ = H₂O образуется малодиссоциируемое вещество

BaCl₂ + H₂SO₄ = BaSO₄ + 2HCl
Ba²⁺ + 2Cl⁻ + 2H⁺ + SO₄²⁻ = BaSO₄ + 2H⁺ + 2Cl⁻
Ba²⁺ +  SO₄²⁻ = BaSO₄  выпадает осадок

2NaOH + CuCl₂ = Cu(OH)₂ + 2NaCl
2Na⁺ + 2OH⁻ + Cu²⁺ + 2Cl⁻ = Cu(OH)₂ + 2Na⁺ + 2Cl⁻
 2OH⁻ + Cu²⁺  = Cu(OH)₂ выпадает осадок

Answer 2

Balancing the Chemical Equations

1. Balanced Molecular Equation: - The molecular equation for the reaction between K2SO3 and HNO3 is: ``` K2SO3 + 2HNO3 → 2KNO3 + H2O + SO2 ```

2. Balanced Molecular Equation: - The molecular equation for the reaction between CaCO3 and HCl is: ``` CaCO3 + 2HCl → CaCl2 + H2O + CO2 ```

3. Balanced Molecular Equation: - The molecular equation for the reaction between NaOH and HNO3 is: ``` NaOH + HNO3 → NaNO3 + H2O ```

4. Balanced Molecular Equation: - The molecular equation for the reaction between BaCl2 and H2SO4 is: ``` BaCl2 + H2SO4 → BaSO4 + 2HCl ```

5. Balanced Molecular Equation: - The molecular equation for the reaction between NaOH and CuCl2 is: ``` 2NaOH + CuCl2 → 2NaCl + Cu(OH)2 ```

Ionization of the Equations

1. Ionization of the Reaction: - The ionization of the reaction between K2SO3 and HNO3 results in the formation of ions and the release of water and sulfur dioxide gas.

2. Ionization of the Reaction: - The ionization of the reaction between CaCO3 and HCl leads to the formation of ions, water, and carbon dioxide gas.

3. Ionization of the Reaction: - The ionization of the reaction between NaOH and HNO3 results in the formation of ions and water.

4. Ionization of the Reaction: - The ionization of the reaction between BaCl2 and H2SO4 leads to the formation of ions, barium sulfate precipitate, and hydrochloric acid.

5. Ionization of the Reaction: - The ionization of the reaction between NaOH and CuCl2 results in the formation of ions, sodium chloride, and copper hydroxide precipitate.

Reasons for the Reaction Occurrence

1. Reason for the Reaction: - The reaction between K2SO3 and HNO3 results in the formation of potassium nitrate, water, and sulfur dioxide due to the exchange of ions between the reactants.

2. Reason for the Reaction: - The reaction between CaCO3 and HCl leads to the formation of calcium chloride, water, and carbon dioxide due to the exchange of ions and the release of carbon dioxide gas.

3. Reason for the Reaction: - The reaction between NaOH and HNO3 results in the formation of sodium nitrate and water due to the exchange of ions between the reactants.

4. Reason for the Reaction: - The reaction between BaCl2 and H2SO4 leads to the formation of barium sulfate precipitate and hydrochloric acid due to the exchange of ions and the formation of a precipitate.

5. Reason for the Reaction: - The reaction between NaOH and CuCl2 results in the formation of sodium chloride and copper hydroxide precipitate due to the exchange of ions and the formation of a precipitate.

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