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Author Topic: How do I know when no reaction will occur?  (Read 13373 times)

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Glorzifen

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How do I know when no reaction will occur?
« on: December 02, 2009, 04:09:03 PM »

As the title states, how do I know when the products will react or not react in these examples?

HI(aq) + Zn(NO3)2(aq) --> ?
CuSO4(aq) + Na2CO3(aq) --> ?
Cu(NO3)2(aq) + Na3PO4(aq) --> ?

Thanks!
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pear

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Re: How do I know when no reaction will occur?
« Reply #1 on: December 02, 2009, 05:02:53 PM »

Solubility rules, mayhaps?
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Glorzifen

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Re: How do I know when no reaction will occur?
« Reply #2 on: December 03, 2009, 06:10:50 AM »

Yeah. Shoulda figured this out on my own.

I have to look at the products and use the solubility table/rules to determine which form aqueous products and which form solid products. If all the products are aqueous, then no reaction occurs because its all just ions floating around.

I'm sure I'll be corrected by someone who knows better if I'm wrong.

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pear

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Re: How do I know when no reaction will occur?
« Reply #3 on: December 04, 2009, 02:51:07 PM »

Don't be so hard on yourself, it isn't obvious when you're just learning it!

But you have the right idea.  Make sure you keep in mind that many of the solubility rules will have exceptions.  A lot of the time, those exceptions are the ones your teacher will assign.
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