ajan_antonian@yahoo.com
science forum beginner
Joined: 16 Apr 2006
Posts: 6
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 Posted: Sun Apr 16, 2006 4:41 pm Post subject:
If we add PbNO3 liquid to water, can we observe the precipitate of Pb(OH)2?
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The solubility product of Pb(OH)2 is 2.5x10-16.In water [OH-] is
10-7moldm-3.At a point [Pb2+] will be 10-1.
So,=[Pb2+][OH-]
=0.1x(10-7)2
=0.1x10-14
=10-15mol3dm-9
So, there should be a precipitate of Pb(OH)2. But in our theory I
haven't met any point like this. |
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