The ionization constant for HNO2 is 2.70 x 10-6 at 25 oC. Determine the standard free energy change for the ionization: NO2- (aq) + H2O (l) ------ HNO2 (aq) + OH- (aq) A. 31.77 kJ/mol B. 38.10 kJ C. 58.10 kJ/mol D. 40.20 kJ/mol E. 48.10 kJ/mol

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