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#Post#: 1138--------------------------------------------------
which chemical?
DIR By: Dean
Date: November 17, 2012, 4:22 am
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Please tell which chemical can use to dissolve PbSO4, and CaSO4
#Post#: 1145--------------------------------------------------
Re: which chemical?
DIR By: Shiva
Date: November 17, 2012, 5:12 am
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well, Calcium sulfate will dissolve in ammonium sulfate solution
and forms a double salt. As far as lead sulfate is concerned, it
will dissolve in ammonium acetate, excess of alkali solution &
boiling concentrated sulfuric acid and produces Lead acetate,
corresponding plumbite & acid sulfate respectively.
Thanks,
Shiva
#Post#: 1198--------------------------------------------------
Re: which chemical?
DIR By: Dean
Date: November 22, 2012, 4:36 am
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Thank you. Please can you write the equations of reactions in
these...
#Post#: 1209--------------------------------------------------
Re: which chemical?
DIR By: Shiva
Date: November 23, 2012, 3:22 am
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Sure, here you go.
Calcium sulfate forms double salt with Ammonium sulfate :
Caso4.(NH4)2SO4.H2O
Lead sulfate with Ammonium acetate
PbSO4 + 2CH3COONH4
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(CH3COO)2Pb + (NH4)2SO4
Lead sulfate with alkali:
PbSO4 + 2NaOH = Pb (OH)2 + Na2SO4
With excess of alkali:
Pb(OH)2 + 2NaOH = Na2PbO2 (Sodium Plumbite) + 2H2O
With boiling concentrated sulfuric acid:
PbSO4 + H2SO4 = Pb(HSO4)2
#Post#: 1212--------------------------------------------------
Re: which chemical?
DIR By: syed hussain ali
Date: November 23, 2012, 3:39 am
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Is this reaction is possible? because both are sulfate PbSO4 and
H2SO4 common ion effect may occurs?
#Post#: 1213--------------------------------------------------
Re: which chemical?
DIR By: Shiva
Date: November 23, 2012, 3:56 am
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Yes, it does as sulfuric acid is a dibasic acid. It forms 2
series of salts, Sulfates & bisulfates.
Shiva
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