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What are the applications of electrochemicalseries or e.m.f. series in (1) Determining relative strength of oxidisingagent in terms of E^(@) values. |
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Answer» Solution :The applications of electrochemical series (or ELECTROMOTIVE series) are as follows : (1) Relative strength of oxidising agents in TERMS of `E_("red")^(@)` values : The `E_("call")^(@)`value is a MEASURE of the tendencyif the SPECIES to be reduced i.e., accept electrons and act as oxidising AGENT. The species mentioned on left hand side of the half reactions are oxidising agents. The substances in the upparpositions in the seriesand hence in the upper left side of the halfreactionshave large positive `E_("red")^(@)` values hence are stronger oxidisingagents. For example, `F_(2), Ce^(4+),Au^(3+)`, etc. As we move down the series, the oxidisingpower decreases . Hence from the position of the elements in the electrochemical series, oxidising agents can be selected. |
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