Explain nitrous acid was titrated to the equivalence point

Reference no: EM13717815

Problem- 50.00 mL of 0.1500 M NaNO3 (aq) was added to a sample containing solid gallium. Nitrate oxidized Ga (s) to Ga3+ (aq). The resulting nitrous acid was titrated to the equivalence point with 27.82 mL of 0.1000 M NaOH (aq). Determine the mass of Ga (s) in the sample.

NO3- (aq) + 3 H+ (aq) + 2 e- --> HNO2 (aq) + H2O Eo = 0.940 V

Ga3+ (aq) + 3 e- --> Ga (s) Eo = -0.549 V

HNO2 (aq) <---> H+ (aq) + NO2- (aq) Eo = 7.1 x 10-4 V

Rewrite your answer from the stating and prove each step carefully.

Reference no: EM13717815

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