Finding net, ionic and molecular equations

In summary, the difference between net, ionic, and molecular equations is that the net ionic equation only includes the species that participate in the reaction, while the molecular equation includes all species present. To find the net ionic equation, first write the balanced molecular equation and then remove the spectator ions. An example of a net ionic equation is Ag+ + Cl- → AgCl for the reaction between NaCl and AgNO3. It is important to find the net ionic equation because it allows us to focus on the actual chemical reaction and understand the stoichiometry. However, there are exceptions to writing net ionic equations, such as reactions without spectator ions which are called complete ionic equations.
  • #1
tica86
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These are practice problems (not hw) that I'm trying to work on, if anyone could help me out, thanks!

I'm trying to find the net, ionic and molecular eq.

1)CaCO2+HCl=CaCl2+CO2(g)+H2O
I just know that CO2 AND H2O doesn't break down because it's a gas and liquid.

2)NaHCO3+HBr=NaBr+CO2(g)+H2O
 
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  • #2
Molecular you already have, now rewrite everything soluble and dissociated in ionic form.

Beware - one formula is wrong. Could be just a typo.

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methods
 

FAQ: Finding net, ionic and molecular equations

1. What is the difference between net, ionic, and molecular equations?

The net ionic equation only includes the species that participate in the reaction, while the molecular equation includes all species present. The ionic equation shows only the ions involved in the reaction, while the molecular equation shows the compound formula for each species.

2. How do you find the net ionic equation?

To find the net ionic equation, first write the balanced molecular equation for the reaction. Then, identify the spectator ions (ions that do not participate in the reaction) and remove them from the equation. The remaining species are the net ionic equation.

3. Can you give an example of a net ionic equation?

Sure, let's look at the reaction between sodium chloride (NaCl) and silver nitrate (AgNO3). The molecular equation is NaCl + AgNO3 → AgCl + NaNO3. The net ionic equation is Ag+ + Cl- → AgCl.

4. Why is it important to find the net ionic equation?

The net ionic equation allows us to focus on the actual chemical reaction that is occurring, rather than the spectator ions. It also helps us to better understand the stoichiometry of the reaction and determine the limiting reactant.

5. Are there any exceptions to writing net ionic equations?

Yes, there are some reactions that do not have spectator ions, meaning the net ionic equation is the same as the molecular equation. These reactions are called complete ionic equations, and they typically involve strong acids or bases dissociating completely in water.

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