IN H2S TITRATION WITH POTENTIOMETRIC INDICATION IN UOP-163 WHY ELECTRODE PREPARATION IS NEEDED?(SILVER ELECTRODE COATED WITH Ag2S?)
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Expert's answer
2015-06-26T06:29:32-0400
Electrode preparation in UOP-163 is needed because the hydrogen sulfide reacts with the silver surface, which leads to inaccuracy in the titration calculations. 4Ag + O2 +2H2S --> 2Ag2S + 2H2O
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