Question

Записать молекулярные и ионные уравнения осуществимых реакций na2co3 + ca(no3)2cu(oh)2+ hclk2co3+ hno3naoh+ h3po4kno3 +na2so4mgco3+ hclfe(no3)3+ kohfe(oh)2 + hno3

Answer 1

Na2CO3 + Ca(NO3)2 = CaCO3(осадок) + 2NaNO3

2Na+ + CO3 2- + Ca2+ + 2NO3- = CaCO3 + 2Na+ + 2NO3-

Ca2+ + CO3 2- = CaCO3

 

Cu(OH)2 + 2HCl = CuCl2 + 2H2O

 

K2CO3 + 2HNO3 = 2KNO3 + H2O + CO2

2K+ + CO3 2- + 2H+ + 2NO3- = 2K+ + 2NO3- + H2O + CO2

2H+ + CO3 2- = H2O + CO2

 

3NaOH + H3PO4 = Na3PO4 + 3H2O

3Na+ + 3OH- + 3H+ + PO4 2- = 3Na+ + PO4 3- + 3H2O

3H+ + 3OH- = 3H2O

 

KNO3 + Na2SO4 = реакция не протекает, т.к не выделяется осадок.

 

MgCO3 + 2HCl = MgCl2 + H2O + CO2

Mg 2+ + CO3 2- + 2H+ + 2Cl- = Mg2+ + 2Cl- + H2O + CO2

2H+ + CO3 2- = H2O + CO2

 

Fe(NO3)3 + 3KOH = 3KNO3 + Fe(OH)3 (осадок)

Fe 3+ + 3NO3- + 3K+ + 3OH- = 3K+ + 3NO3- + Fe(OH)3

Fe3+ + 3OH- = Fe(OH)3

 

Fe(OH)2 + 2HNO3 = Fe(NO3)2 + 2H2O

Fe 2+ + 2OH- + 2H+ + 2NO3- = Fe2+ + 2NO3- + 2H2O

2H+ + 2OH-  = 2H2O

 

 

Answer 2

Molecular and Ionic Equations for the Given Reactions

To write the molecular and ionic equations for the given reactions, we need to identify the reactants and products involved in each reaction. Let's go through each reaction one by one:

1. Reaction: Na2CO3 + Ca(NO3)2 → - Reactants: Na2CO3 (sodium carbonate), Ca(NO3)2 (calcium nitrate) - Products: NaNO3 (sodium nitrate), CaCO3 (calcium carbonate) - Molecular Equation: Na2CO3 + Ca(NO3)2 → 2NaNO3 + CaCO3 - Ionic Equation: 2Na+ + CO3^2- + Ca^2+ + 2NO3^- → 2Na+ + 2NO3^- + CaCO3 - Net Ionic Equation: CO3^2- + Ca^2+ → CaCO3

2. Reaction: Cu(OH)2 + HCl → - Reactants: Cu(OH)2 (copper hydroxide), HCl (hydrochloric acid) - Products: CuCl2 (copper chloride), H2O (water) - Molecular Equation: Cu(OH)2 + 2HCl → CuCl2 + 2H2O - Ionic Equation: Cu(OH)2 + 2H+ + 2Cl^- → Cu^2+ + 2Cl^- + 2H2O - Net Ionic Equation: Cu(OH)2 + 2H+ → Cu^2+ + 2H2O

3. Reaction: NaOH + H3PO4 → - Reactants: NaOH (sodium hydroxide), H3PO4 (phosphoric acid) - Products: Na3PO4 (sodium phosphate), H2O (water) - Molecular Equation: NaOH + H3PO4 → Na3PO4 + H2O - Ionic Equation: Na+ + OH^- + H3PO4 → Na3PO4 + H2O - Net Ionic Equation: OH^- + H3PO4 → H2O + PO4^3-

4. Reaction: KNO3 + Na2SO4 → - Reactants: KNO3 (potassium nitrate), Na2SO4 (sodium sulfate) - Products: K2SO4 (potassium sulfate), NaNO3 (sodium nitrate) - Molecular Equation: 2KNO3 + Na2SO4 → K2SO4 + 2NaNO3 - Ionic Equation: 2K+ + 2NO3^- + 2Na+ + SO4^2- → K2SO4 + 2Na+ + 2NO3^- - Net Ionic Equation: 2K+ + SO4^2- → K2SO4

5. Reaction: MgCO3 + HCl → - Reactants: MgCO3 (magnesium carbonate), HCl (hydrochloric acid) - Products: MgCl2 (magnesium chloride), H2O (water), CO2 (carbon dioxide) - Molecular Equation: MgCO3 + 2HCl → MgCl2 + H2O + CO2 - Ionic Equation: MgCO3 + 2H+ + 2Cl^- → Mg^2+ + 2Cl^- + H2O + CO2 - Net Ionic Equation: MgCO3 + 2H+ → Mg^2+ + H2O + CO2

6. Reaction: Fe(NO3)3 + KOH → - Reactants: Fe(NO3)3 (iron(III) nitrate), KOH (potassium hydroxide) - Products: Fe(OH)3 (iron(III) hydroxide), KNO3 (potassium nitrate) - Molecular Equation: Fe(NO3)3 + 3KOH → Fe(OH)3 + 3KNO3 - Ionic Equation: Fe^3+ + 3NO3^- + 3K+ + 3OH^- → Fe(OH)3 + 3K+ + 3NO3^- - Net Ionic Equation: Fe^3+ + 3OH^- → Fe(OH)3

7. Reaction: HCl + Fe(OH)2 → - Reactants: HCl (hydrochloric acid), Fe(OH)2 (iron(II) hydroxide) - Products: FeCl2 (iron(II) chloride), H2O (water) - Molecular Equation: 2HCl + Fe(OH)2 → FeCl2 + 2H2O - Ionic Equation: 2H+ + 2Cl^- + Fe^2+ + 2OH^- → FeCl2 + 2H2O - Net Ionic Equation: 2H+ + Fe^2+ + 2OH^- → FeCl2 + 2H2O

8. Reaction: HNO3 + NaOH → - Reactants: HNO3 (nitric acid), NaOH (sodium hydroxide) - Products: NaNO3 (sodium nitrate), H2O (water) - Molecular Equation: HNO3 + NaOH → NaNO3 + H2O - Ionic Equation: H+ + NO3^- + Na+ + OH^- → Na+ + NO3^- + H2O - Net Ionic Equation: H+ + OH^- → H2O

Please note that the net ionic equations represent the simplified form of the reactions, showing only the species directly involved in the chemical change.