Question

напишите молекулярные и ионные уравнения реакций между растворами карбоната натрия и нитрата магния Na2CO3+Mg(NO3)2=

Answer 1

Mg(NO₃)₂ + Na₂CO₃ = MgCO₃↓ + 2NaNO₃
Mg²⁺ + 2NO₃⁻ + 2Na⁺ + CO₃²⁻ = MgCO₃↓ + 2Na⁺ + 2NO₃⁻
Mg²⁺ +  CO₃²⁻ = MgCO₃↓ 

Answer 2

Molecular and Ionic Equations for the Reaction between Sodium Carbonate and Magnesium Nitrate

To determine the molecular and ionic equations for the reaction between sodium carbonate (Na2CO3) and magnesium nitrate (Mg(NO3)2), we need to consider the solubility of the compounds and the possible formation of precipitates.

1. Molecular Equation: The molecular equation represents the overall reaction without considering the dissociation of the compounds.

The molecular equation for the reaction between sodium carbonate and magnesium nitrate is:

Na2CO3 + Mg(NO3)2 → 2NaNO3 + MgCO3

2. Ionic Equation: The ionic equation represents the reaction in terms of individual ions.

To write the ionic equation, we need to consider the dissociation of the compounds into their respective ions.

The dissociation of sodium carbonate (Na2CO3) can be represented as:

Na2CO3 → 2Na+ + CO3^2-

The dissociation of magnesium nitrate (Mg(NO3)2) can be represented as:

Mg(NO3)2 → Mg^2+ + 2NO3^-

Now, we can write the ionic equation for the reaction between sodium carbonate and magnesium nitrate:

2Na+ + CO3^2- + Mg^2+ + 2NO3^- → 2Na+ + 2NO3^- + MgCO3

3. Net Ionic Equation: The net ionic equation represents the reaction after removing the spectator ions, which are ions that do not participate in the reaction.

In this case, the sodium ions (Na+) and nitrate ions (NO3^-) are spectator ions because they appear on both sides of the equation. Therefore, they can be removed from the equation.

The net ionic equation for the reaction between sodium carbonate and magnesium nitrate is:

CO3^2- + Mg^2+ → MgCO3

4. Conclusion: The molecular equation for the reaction between sodium carbonate and magnesium nitrate is: Na2CO3 + Mg(NO3)2 → 2NaNO3 + MgCO3

The ionic equation for the reaction is: 2Na+ + CO3^2- + Mg^2+ + 2NO3^- → 2Na+ + 2NO3^- + MgCO3

The net ionic equation for the reaction is: CO3^2- + Mg^2+ → MgCO3

Please note that the solubility of the resulting compound, magnesium carbonate (MgCO3), should be considered to determine if it forms a precipitate or remains in solution.