A constant current was flown for 2 hour through a KI solution oxidising iodide ion to…

CHEMISTRY · Subjective · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

A constant current was flown for 2 hour through a KI solution oxidising iodide ion to iodine (

2\text{I}^- \to \text{I}_2 + 2\text{e}^-

). At the end of experiment liberated iodine consumed 21.75 mL of 0.0831 M solution of sodium thiosulphate following the redox change

\text{I}_2 + 2\text{S}_2\text{O}_3^{2-} \to 2\text{I}^- + \text{S}_4\text{O}_6^{2-}

What was the average rate of current flown in ampere?