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50 mlsample of 0.200 M HNO2 is titrated with 0.200M KOH. a)Fill in the equation...

50 mlsample of 0.200 M HNO2 is titrated with 0.200M KOH.
a)Fill in the equation (include states of matter, ie.s,l,g, aq)
b) Determine the Ph at the half-equivalence point of KOH added(25ml of KOH added)
pKa of HNO2=3.34
c)Determine the at the equivalence point for the titration of HNO2and KOH. Total volume =100.0ml .kb of NO2-=2.19 x 10^-11 Assume?

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