destroyre Gchem #37 net ionic equation

[joonkimdds]

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it says
"sodium sulfate reacts with barium iodide. find net ionic equation."

I know the difference between molecular equation, total ionic equation, and the net ionic equation.

the problem I am having now is how to write a molecular equation thus i can find total ionic and net ionic equation.
For this problem the molecular equation is
Na2SO4(aq) + BaI2(aq) ==> BaSO4(s) + 2NaI(aq)

How do I know that Ba + SO4 will have solid BaSO4 and Na + I will have aqueous NaI? so basically I want to know when it becomes solid or aqeous product.

 

[Thundercatz]

it says
"sodium sulfate reacts with barium iodide. find net ionic equation."

I know the difference between molecular equation, total ionic equation, and the net ionic equation.

the problem I am having now is how to write a molecular equation thus i can find total ionic and net ionic equation.
For this problem the molecular equation is
Na2SO4(aq) + BaI2(aq) ==> BaSO4(s) + 2NaI(aq)

How do I know that Ba + SO4 will have solid BaSO4 and Na + I will have aqueous NaI? so basically I want to know when it becomes solid or aqeous product.

Joon,

You have to remember your solubility rules here. Remember that group 1A are always soluble. SO4 is usually soluble also but not when bonded to larger group 2A elements.

Off to take my test now! Good luck studying.

 

[xhamburgersamx]

Yeah, this basically a solubility question which you should try to remember the rules. Group 1A metals are soluble etc etc. So after you do the double replacement reaction from the molecular - remove the spectator ions which are soluble to get your net ionic equation