After the electrolysis of aqueous solution of \(AgNO _{3}\) using platinum electrodes, the ions remaining in solution are ____________
A. \(Ag ^{+}\)and \(NO _{3}\) B. \(H +\) and \(OH\) C. \(Ag ^{+}\)and \(OH ^{-} \) D. \(H ^{+}\)and \(NO _{3}^{-}\)
Correct Answer: D
Explanation
Both \(Ag ^{+}\)and \(H ^{+}\)migrate to the cathode. Since \(Ag ^{+}\)is lower than \(H ^{\prime}\) in the electro chemical series, \(Ag ^{+}\)is preferentially selected. Also, \(OH -\) is selected against \(NO _{3}\) at the anode. Thus, the ions remaining after the electrolysis of aqueous \(AgNO _{3}\) using platinum electrodes are \(H ^{+}\)and \(NO _{3}^{-}\)