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If solutions of Na2CO3 and Fe(NO3)2 are mixed, will a precipitation reaction occur?

tlkelley

wrote...

Posts: 8

Rep:

11 years ago

If solutions of Na2CO3 and Fe(NO3)2 are mixed, will a precipitation reaction occur?

Please show me how to solve this problem. I know that I have to switch the anions and cations, but I am stuck with balancing the equation. Please show me the correctly balanced equation. Thanks.

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tlgomez

wrote...

#1

11 years ago

Yes, as the products are NaNO3 and FeCO3.

FeCO3 is a precipitate.

iliketorifk

wrote...

#2

11 years ago

double displacement, as you said, anions and cations switch partners.
Na in column 1, becomes a+1 ion, so it balances with NO3 which has a -1 charge
Fe as given is +2,CO3 is a -2 ion, FeCO3 is insoluble.
You can figure the ionic charge on elements in column, 1,2,17. You need to memorize some of the polyatomic ions.Elements with more than one oxidation states, you will be given the oxidation number

Na2CO3(aq)+ Fe(NO3)2(aq)---> FeCO3(s)+ 2NaNO3(aq)

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