Sodium Carbonate + Hydrochloric Acid - Na2CO3 + HCl - Molecular Equations & Net Ionic Equations

TL;DR

Learn how to write the chemical formula of sodium carbonate and hydrochloric acid, and how to write balanced molecular, total ionic, and net ionic equations for their reaction.

Transcript

in this video we're going to talk about how to write the balanced molecular equation and the net ionic equation when aqueous sodium carbonate reacts with aqueous hydrochloric acid so the first thing we need to know how to do is how to write the chemical formula of an ionic compound and also an acid so let's start with sodium carbonate sodium has a ... Read More

Key Insights

• 😑 Sodium carbonate has the chemical formula Na2CO3, with Na+ ions and CO3^2- ions.
• 😑 Hydrochloric acid has the chemical formula HCl and dissociates into H+ and Cl- ions in water.
• ❓ The balanced molecular equation for the reaction between sodium carbonate and hydrochloric acid is Na2CO3 + 2HCl → 2NaCl + H2CO3.
• 😑 The net ionic equation, obtained by removing spectator ions, is 2H+ + CO3^2- → H2O + CO2.
• ❓ Sodium chloride (NaCl) and carbonic acid (H2CO3) are the products of the reaction.
• 💦 Carbonic acid easily decomposes into water and carbon dioxide in acidic conditions.
• ⏫ The reaction between sodium carbonate and hydrochloric acid is a double replacement reaction.

Questions & Answers

Q: How do you determine the chemical formula of sodium carbonate?

Sodium carbonate is composed of sodium ions (Na+) and carbonate ions (CO3^2-). Sodium has a +1 charge, and carbonate has a -2 charge, so the formula is Na2CO3.

Q: What is the chemical formula of hydrochloric acid?

Hydrochloric acid is a binary acid composed of hydrogen (H) and chlorine (Cl). The formula is HCl.

Q: How do you write the balanced molecular equation for the reaction of sodium carbonate and hydrochloric acid?

The balanced molecular equation is Na2CO3 + 2HCl → 2NaCl + H2CO3. This equation shows the reactants and products in their molecular form, without considering the dissociation of ions.

Q: What is the net ionic equation for the reaction of sodium carbonate and hydrochloric acid?

The net ionic equation is obtained by removing the spectator ions (ions that do not participate in the reaction) from the total ionic equation. For this reaction, the net ionic equation is 2H+ + CO3^2- → H2O + CO2.

Summary & Key Takeaways

• Sodium carbonate (Na2CO3) is an ionic compound with a +1 charge for sodium and a -2 charge for carbonate.

• Hydrochloric acid (HCl) is a strong acid commonly used in chemical reactions.

• When sodium carbonate reacts with hydrochloric acid, the balanced molecular equation is Na2CO3 + 2HCl → 2NaCl + H2CO3. The net ionic equation is 2H+ + CO3^2- → H2O + CO2.