59. Solving a chemistry problem

59. Solving a chemistry problem

14. The electromotive force of the following cell was measured: Pt/H2(P2=1 atm), HNO2 (aHNO2=0.5)//KCl(sat), Hg2Cl/Hg. For aHNO2=0.50 mol/cm3 E=0.348 V. Determine the dissociation constant of HNO2 if the potential of the saturated calomel electrode is 0.244 V.

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