Steps in writing net ionic equation??

Question

.please! thanks!!

Answer 1

.in writing net ionic equations..

1. start with a total equation for the reaction, making sure that it is balanced.

2. write all compounds that are both soluble and ionic in the form of their separate ions making sure that you have the correct number of ions of each type.

3. write all other compounds (for example, gases, other covalent compounds, and all solids) as complete compounds

4. eliminate the ions that are unchanged on both sides of the equation to obtain the net ionic equation

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Answer 2

A Net Ionic Equation is a chemical equation for a reaction which lists only those species participating in the reaction.

To write a Net Ionic Reaction, follow these 3 steps:

1) Start by simply writing the overall balanced chemical reaction. This is also called the Molecular Equation.

2) Then, you break apart the soluble molecules into the two ions that are formed (one positive and one negative). You will have to use the solubility rules to do this, they can be found online. If something is insoluble, it should not be broken apart. Write the reaction out with all of the separated ions. This is called the Total Ionic Equation.

3) Then, you simplify by canceling things out if they appear on both sides of the reaction, resulting in the Net Ionic Equation.

For example, let look at the reaction of calcium carbonate with hydrochloric acid to form calcium chloride, water, and carbon dioxide:

--Molecular Equation:

CaCO3(s) + 2HCl(aq) ---> CaCl2(aq) + H2O(l) + CO2(g)

--Total Ionic Equation:

CaCO3(s) + 2H+(aq) + 2Cl-(aq) ---> Ca2+(aq) + 2Cl-(aq) + H2O(l) + CO2(g)

--Net Ionic Equation:

CaCO3(s) + 2H+(aq) ---> Ca2+(aq) + H2O(l) + CO2(g)

Notice that the Cl- was canceled out from the Net Ionic Equation, because it really isn't playing an important part of this reaction. It is just there to balance out the charge because you can't have an ion just by itself -- you must alway pair an ion with another one of opposite charge so that the overall charge is zero.