Tuesday, February 22, 2011

Net Ionic equations

Hello,

Net ionic equations can be viewed as like a simplified form of  a balanced DOUBLE REPLACEMENT equation.

This is needed when the one of the products in the equation changes states to solid.

For example

Take this equation,

NH4Cl(aq) + AgNO3(aq) → AgCl(s) + NH4NO3(aq)

The product AgCl is a solid, in this case, you need a "net ionic equation".

First,

Separate all elements that are not solid

NH4(aq) + Cl(aq) + Ag(aq) + NO3(aq) → AgCl(s) + NH4(aq) + NO3(aq)

Then,

Cancel out elements that are repeated in both products and reactants.

The equation will become like this:

Ag(aq) + Cl(aq) → AgCl(s)

This is net ionic equation.

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