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Topic: Formation of Precipitates  (Read 3829 times)

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Offline is3zzz

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Formation of Precipitates
« on: October 18, 2007, 09:25:59 PM »
Which of the following reactions will result in the formation of a PRECIPITATE.

I know that in order to find out the precipitate I would:
Write out the equation and balance it.
Then find out which ones are soluble or insoluble.  The soluble product will form a precipitate. 
Then perform a net ionic equation to see which dissociated ions have been canceled out.

I would show my work, but it would be a lot to typing for each equation.....So I just made it easier to provide my answers. I will also be willing to provide my answer for any if requested upon for some help.

However, I just want to make sure my answers are correct. And my answers are B C E G, all form precipitates, but the other do not. Is this correct?
Does anyone seem to see  precipitates forming in the other equations?

A.  Sulfuric acid reacts with zinc in aqueous solution.
B.  Metallic lead is placed into an aqueous solution of sulfuric acid.
C.  Silver(I) acetate and aqueous HCl are mixed.
D.  Sodium metal is placed in water.
E.  Potassium permanganate oxidizes lead to lead(II) in aqueous sulfuric acid.
F.  Sodium carbonate and HI are mixed in aqueous solution.
G.  Lead(II) nitrate and NaCl are mixed in aqueous solution.
H.  Copper metal is dissolved in nitric acid. The resulting solution is neutralized with

Offline is3zzz

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Re: Formation of Precipitates
« Reply #1 on: October 18, 2007, 09:46:08 PM »
^^^^^^TYPO I meant "the INSOUBLE" product will form a ppt.

Offline Borek

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Re: Formation of Precipitates
« Reply #2 on: October 19, 2007, 03:07:15 AM »
H.  Copper metal is dissolved in nitric acid. The resulting solution is neutralized with

Tricky. All depends on the final pH. Otherwise you seem to be doing fine.
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Offline AWK

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Re: Formation of Precipitates
« Reply #3 on: October 19, 2007, 05:47:06 AM »
Google: solubility rules.
The first two links are absolutely sufficient
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