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[Post New]20 May 2008 00:19:36 IST
    Subject: 1) H2S in the presence of HCl precipitates second group radicals but not fourth group radi
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aditi_g (355)

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Olaaa!! Perrrfect answer. 57  [92 rates]
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5. b)
use the formula pH = pKa + log[salt]/ [acid]
since the acid is 50% neutralized therefore [salt]/[acid]=1
therefore pH = pKa
= 4-log 2 = 3.7
 this reply: 7 points  (with 1 Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
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