There are aqueous solutions of the following substances: H2SO4, Na2CO3, KOH, HCl.

| February 19, 2021 | education

There are aqueous solutions of the following substances: H2SO4, Na2CO3, KOH, HCl. Write the molecular and ionic reaction equations that you can carry out between them.

In the assignment, we are given aqueous solutions of sulfuric acid, sodium carbonate, sodium hydroxide and hydrochloric acid. Consider three reactions that are possible when these substances interact with each other.

Sulfuric acid reacts with sodium carbonate to form sodium sulfate salt and carbonic acid.

H₂SO₄ + Na₂CO₃ = Na₂SO₄ + CO₂ + H₂O
2 H⁺ + SO₄²⁻ + 2Na⁺ + CO₃²⁻ = 2Na⁺ + SO₄²⁻ + CO₂ + H₂O
2 H⁺ + CO₃²⁻ = CO₂ + H₂O

The reaction takes place between substances such as sodium hydroxide and hydrochloric acid. As a result of the reaction, a substance is formed: sodium chloride salt and water is released.

NaOH + HCl = NaCl + H2O
Na + + OH- + H + + Cl- = Na + + Cl- + H2O
OH- + H + = H2O

Salt sodium carbonate reacts chemically with hydrochloric acid to form sodium chloride and carbonic acid salt.
Na2CO3 + 2 HCl = 2 NaCl + CO2 ↑ + H2O
2 Na + + CO32- + 2 H + + 2 Cl- = 2 Na + + 2 Cl- + CO2 ↑ + H2O
CO32- + 2 H + = CO2 ↑ + H2O.



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