Question

Write the molecular, complete ionic, and net ionic equations for the following. Make sure to properly identify all phases in the reaction. A) Nitric Acid and Potassium Carbonate B) Sodium Bromide and Lead Nitrate C) Acetic Acid and Calcium Hydroxide D) Calcium Nitrate and Sodium Sulfate E) Ammonium Chloride and Lithium Hydroxide

Answer 1

A) Nitric acid = HNO₃ and Potassium Carbonate = K₂CO₃

K₂CO₃ + HNO₃ -------> H₂O + CO₂ + KNO₃

1) Molecular equation:

K₂CO_{3 (aq.)} + 2HNO_3(aq.) -------> H₂O _(l) + CO_2(g) + 2KNO_3(aq.)

2) Ionic equation:

2K⁺_(aq.) + CO₃^2- (aq.) + 2H⁺_(aq.) + 2NO₃^-_(aq.)  -------> 2K⁺_(aq.) + 2NO₃^-_(aq.) + CO_{2 (g)} + H₂O _(l)

3) Net ionic equation:

After cancelling spectator ion we got net ionic equation like this,

CO₃^2- _(aq.) + 2H⁺_(aq.) ------> CO_{2 (g)} + H₂O _(l).

B) Sodium Bromide (NaBr) and Lead Nitrate (Pb(NO₃)₂)

NaBr_(aq.) + Pb(NO₃)_{2 (aq.)} ----> PbBr_{2 (s)} + NaNO_{3 (aq.)}

1) Molecular equation:

2NaBr _(aq.) + Pb(NO₃)_{2 (aq.)} ----> PbBr_{2 (s)} + 2NaNO_{3 (aq.)}

2) Ionic equation:

2Na⁺_(aq.) + 2Br^-_(aq.) + Pb²⁺_(aq.) + 2NO₃^-_(aq.) -------> PbBr_{2 (s)} + 2Na⁺_(aq.) + 2NO₃^-_(aq.)

3) Net ionic equation:

Pb²⁺_(aq.) + 2Br^-_(aq.) ------> PbBr_{2 (s)}

C) Acetic acid ( CH3COOH) and Calcium hydroxide ( Ca(OH)2)

1) Molecular equation:

2CH₃COOH + Ca(OH)₂ -----> Ca(CH₃COO)₂ + 2H₂O

2) Ionic equation:

2CH₃COO^-_(aq.) + 2H⁺_(aq.)+ Ca²⁺_(aq.) + 2OH^-_(aq.) -------> Ca²⁺ _(aq.) + 2CH₃COO^-_(aq.) + 2H₂O(l)

3) Net ionic equation:

2H⁺_(aq.) + 2OH^-_(aq.) ------> 2H₂O _(l) .

D) Calcium nitrate ( Ca(NO₃)₂ ) and Sodium sulphate (Na₂SO₄).

1) Molecular equation:

  Ca(NO₃)_{2 (aq.)} + Na₂SO_{4 (aq.)} ------> CaSO_{4 (s)} + 2NaNO_{3 (aq.)}

2) Ionic equation:

Ca²⁺_(aq.) + 2NO₃^-_(aq.) + 2Na⁺_(aq.) + SO₄^-_(aq.) ------> CaSO_{4 (s)} + 2Na⁺_{(aq.) +} 2NO₃^-_(aq.)

3) Net ionic equation:

Ca²⁺_(aq.) + SO₄^-_(aq.) -------> CaSO_{4 (s)}

E) Ammonium chloride and Lithium hydroxide:

1) Molecular equation:

NH₄Cl_(aq.) + LiOH_(aq.) -----> NH_{3 (g)} + LiCl_(aq.) + H₂O_(l)

2) Ionic equation:

NH₄⁺_(aq.) + Cl^-_(aq.) + Li⁺_(aq.) + OH^-_(aq.) -------> NH_{3 (g)} + Li⁺_(aq.) + Cl^-_(aq.) + H₂O_(l).

3) Net Ionic equation:

NH₄⁺_(aq. + OH^-_(aq.) -------> NH_{3 (g)} + H₂O _(l).

I hope this will help you. If any queries regarding this please comment here. Thank you.

Answer 2

A) Nitric Acid and Potassium Carbonate:

Molecular equation: HNO3(aq) + K2CO3(aq) → 2KNO3(aq) + CO2(g) + H2O(l)

Complete ionic equation: 2H+(aq) + 2NO3-(aq) + 2K+(aq) + CO32-(aq) → 2K+(aq) + 2NO3-(aq) + CO2(g) + H2O(l)

Net ionic equation: 2H+(aq) + CO32-(aq) → CO2(g) + H2O(l)

B) Sodium Bromide and Lead Nitrate:

Molecular equation: 2NaBr(aq) + Pb(NO3)2(aq) → 2NaNO3(aq) + PbBr2(s)

Complete ionic equation: 2Na+(aq) + 2Br-(aq) + Pb2+(aq) + 2NO3-(aq) → 2Na+(aq) + 2NO3-(aq) + PbBr2(s)

Net ionic equation: 2Br-(aq) + Pb2+(aq) → PbBr2(s)

C) Acetic Acid and Calcium Hydroxide:

Molecular equation: 2CH3COOH(aq) + Ca(OH)2(aq) → Ca(CH3COO)2(aq) + 2H2O(l)

Complete ionic equation: 2CH3COOH(aq) + Ca2+(aq) + 2OH-(aq) → Ca(CH3COO)2(aq) + 2H2O(l)

Net ionic equation: 2H+(aq) + 2OH-(aq) → 2H2O(l)

D) Calcium Nitrate and Sodium Sulfate:

Molecular equation: Ca(NO3)2(aq) + Na2SO4(aq) → CaSO4(s) + 2NaNO3(aq)

Complete ionic equation: Ca2+(aq) + 2NO3-(aq) + 2Na+(aq) + SO42-(aq) → CaSO4(s) + 2Na+(aq) + 2NO3-(aq)

Net ionic equation: Ca2+(aq) + SO42-(aq) → CaSO4(s)

E) Ammonium Chloride and Lithium Hydroxide:

Molecular equation: NH4Cl(aq) + LiOH(aq) → LiCl(aq) + NH4OH(aq)

Complete ionic equation: NH4+(aq) + Cl-(aq) + Li+(aq) + OH-(aq) → Li+(aq) + Cl-(aq) + NH4OH(aq)

Net ionic equation: NH4+(aq) + OH-(aq) → NH4OH(aq)