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Question
Select the ion in the following case, that would get selectively discharged from the aqueous mixture of the ions listed below:
\[\ce{SO^2-_4, NO^-_3 {and} OH-}\]
Solution
\[\ce{OH^-}\] ion will get discharged in preference to \[\ce{SO^2-_4 {or} NO^-_3}\] ions.
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