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Ksp and precipitation of carbonates

  • Thread starter TT0
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  • #1
TT0
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Homework Statement


Screen Shot 2016-07-04 at 1.46.53 PM.png


Homework Equations




The Attempt at a Solution


The lower the Ksp, the more insoluble. Therefore, I chose B since strontium and barium carbonates have the lowest Ksp. However, the question asks which carbonate will precipitate and I know that all carbonates are insoluble. Can someone explain to me what did I think wrong?

Cheers!
 

Answers and Replies

  • #2
Borek
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Why don't you calculate instead of guessing?
 
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  • #3
TT0
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Why don't you calculate instead of guessing?

Sorry, but I can't see what to calculate. Could you please tell me where can I calculate something?

Thanks!
 
  • #4
Borek
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You are given Ksp, you are given concentrations - you can easily check whether the precipitate should form or not. If you don't see how - read about solving Ksp related problems.

Don't forget about dilution.
 
  • #5
TT0
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I see, after calculating, strontium and barium carbonate won't dissolve as the molarity of the ions in the solution exceed the amount that will dissolve. Is the answer B?

Thanks
 
  • #6
Borek
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Yes.
 
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