Again a problematic question about precipitation

[bidiboom]

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Hi again,

I'm afraid this is another problematic question:

Does CuSO4 dissolve and create an acid solution?
The answer is yes, but to me it should be no. Its a product of CU(OH)2 and H2SO4 and because the product is a precipitation (and thus goes to the end), it doesnt go reverse, because precipitation comes out from strong attraction between the ions.

Am I wrong, or is it the question again?

edit: I am wrong 🙁 CuSO4 doesnt precipitate, contrarily since Cu(OH)2 precipitates, CuSO4 in water will create an acidic solution.. sorry for taking your time, guys..

 

[Erythropoietin]

Check this out
http://answers.yahoo.com/question/index?qid=20080605160333AAYZNjm

 

[Erythropoietin]

You can also think about it in terms of titrations.
Weak acid + Strong base will give you a pH above 7.
Strong acid + Strong base: pH is neutral
Strond acid + Weak base = pH below 7

so Cu(OH)2, weak base, plus H2SO4, strong acid, will give you a pH below 7 (acidic)....that's another way to think about it

 

[bidiboom]

Great.. both the link and your titration approach are very clarifying.. thank you Erithro 🙂

I see I am very easy to be distracted. I saw the "(s)" in CuSO4(s) and directly get in precipitation approach.. ah ah ah 🙁 anyway, thanks a lot again..

 

[Erythropoietin]

Great.. both the link and your titration approach are very clarifying.. thank you Erithro 🙂

I see I am very easy to be distracted. I saw the "(s)" in CuSO4(s) and directly get in precipitation approach.. ah ah ah 🙁 anyway, thanks a lot again..

Memorize the solubility rules in your genchem textbook or online, they are also at the end of chapter 1 in TBR genchem book if you have it. That helped me a lot.