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Topic: Precipitate Question  (Read 3461 times)

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Offline Computerized

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Precipitate Question
« on: May 04, 2009, 05:27:32 PM »
"To precipitate Ag+ from an aqueous solution, one could add:

A. HNO3
B. NaNO3
C. NH3
D. Zn(NO3)2
E. NaCl

The answer is E, but I'm unsure how you know that. Why don't the other ones work?
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Offline Borek

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Re: Precipitate Question
« Reply #1 on: May 04, 2009, 06:04:33 PM »
What do you know about weakly soluble salts of silver? About weakly soluble salts in general? Do you know solubility rules?
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Offline Computerized

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Re: Precipitate Question
« Reply #2 on: May 04, 2009, 06:31:53 PM »
I don't know anything about weakly soluble salts of silver.

I usually just use a handout on solubility rules to answer my questions, but I don't know them off the top of my head.
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Offline Borek

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Re: Precipitate Question
« Reply #3 on: May 04, 2009, 06:37:33 PM »
For sure the answer is in the solubility rules. Where you will check it - doesn't matter.
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