Electrolytically generated I2 was used to determine the amount of H2S in 100.0 mL of brack...

Electrolytically generated I2 was used to determine the amount of H2S in 100.0 mL of brackish water. Following addition of excess KI, a titration at a constant current of 46.3 mA required 11.05 min. The reaction was

Express the results of the analysis in terms of ppm H2S.