pKa of H2PO4- is = 7.21According to Hendersons Equation ,pH = .pdf

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pKa of H2PO4- is = 7.21
According to Henderson\'s Equation ,
pH = pKa + log ( [salt] /[acid])
= pKa + log ( [Na2HPO4] / [ KH2PO4 ] )
= 7.21 + log ( 0.135 / 0.185 )
= 7.21 - 0.14
= 7.07
Solution
pKa of H2PO4- is = 7.21
According to Henderson\'s Equation ,
pH = pKa + log ( [salt] /[acid])
= pK...

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pKa of H2PO4- is = 7.21
According to Henderson\'s Equation ,
pH = pKa + log ( [salt] /[acid])
     = pKa + log ( [Na2HPO4] / [ KH2PO4 ] )
    = 7.21 + log ( 0.135 / 0.185 )
   = 7.21 - 0.14
   = 7.07

Solution

pKa of H2PO4- is = 7.21
According to Henderson\'s Equation ,
pH = pKa + log ( [salt] /[acid])
     = pKa + log ( [Na2HPO4] / [ KH2PO4 ] )
    = 7.21 + log ( 0.135 / 0.185 )
   = 7.21 - 0.14
   = 7.07