Net ionic equations for tom!

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kawaiiHonya4
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Joined: Sun May 04, 2008 6:42 pm

Net ionic equations for tom!

Post by kawaiiHonya4 »

I am not good in chem and i need help doing the net ionic equations for these equations and one balanced equation and the net ionic equation for that one... I did as much as i could but i am at a loss... they are all double displacement problems... and its due tom... so please can you help!?

A. Na2C2)4+Sr(No3)2=2NaNO3+SrC2O4
B. CaCl2+(NH4)2CO3+CaCO3+3NH4Cl
C.Sr(NO3)2+(NH4)2CO3=SrCO3+2NH4NO3
D. Sr(NO3)2+K2SO4=SrSo4+2KNO3
and here is the unbalanced equation
e. (NH4)CO3+Al2(SO4)3=NH4SO4+AlCO3
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Zedekiah
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Joined: Thu May 01, 2008 5:33 pm

Post by Zedekiah »

The main thing about net ionics : if something appears the same on one side as the other, don't include it. The solutions below assume that you are working with solutions; the net ionic equation for a solution of sodium oxalate and strontium nitrate is different than if you were to add solid sodium oxalate to a strontium nitrate solution.

Example :

1) Solid sodium chloride is added to a solution of lead(II) nitrate.

Net ionic :

Code: Select all

2NaCl + Pb²+     --->   2Na+   +   PbCl2
2) Solutions of sodium chloride and lead(II) nitrate are mixed.

Net ionic :

Code: Select all

2Cl-   +  Pb²+       --->     PbCl2
The difference between those two situations is key to doing net ionics.

Regardless :

Code: Select all

A.  C2O4²- + Sr²+      --->       SrC2O4

B.  Ca²+ + CO3²-            --->       CaCO3

C.  Sr²+  +  CO3²-       --->   SrCO3 

D.   Sr²+ + SO4²-    --->     SrSO4

E. i)  2Al³+   +   3CO3²-      --->   Al2(CO3)3
If you want to be really picky, mixing a carbonate salt with a soluble aluminum salt yields Al2(CO3)2OH, in the same way mixing a carbonate salt with copper yields Cupric carbonate basic, which has a hydroxide in its structure.


Good luck!
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kawaiiHonya4
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Joined: Sun May 04, 2008 6:42 pm

Re: Net ionic equations for tom!

Post by kawaiiHonya4 »

kawaiiHonya4 wrote:I am not good in chem and i need help doing the net ionic equations for these equations and one balanced equation and the net ionic equation for that one... I did as much as i could but i am at a loss... they are all double displacement problems... and its due tom... so please can you help!?

A. Na2C2)4+Sr(No3)2=2NaNO3+SrC2O4
B. CaCl2+(NH4)2CO3+CaCO3+3NH4Cl
C.Sr(NO3)2+(NH4)2CO3=SrCO3+2NH4NO3
D. Sr(NO3)2+K2SO4=SrSo4+2KNO3
and here is the unbalanced equation
e. (NH4)CO3+Al2(SO4)3=NH4SO4+AlCO3
oh i messed up on the last one!

(NH4)2CO3+Al2(SO4)3=NH4SO4+AlCO3

and yes in solutions of water... but the water is left out of the equations.
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