Mixture containing aqueous Li + , Na + , K + ions are electrolysed. cations are discharged at cathode in the…

Mixture containing aqueous Li+, Na+, K+ ions are electrolysed. cations are discharged at cathode in the order : (easiest at the end) M + aq + e - M
  1. Li + Na + K +
  2. K + Na + Li +
  3. Li + K + Na +
  4. Na + K + Li +

Solution

E red o Metal
-3.05V Li
-2.71V Na
-2.93V K
Higher the value of E red o more preferably the ions is reduced at cathode that is Na+ > K+ > Li+ ,

Asked in: JEE-TOPICTESTS-CHEMISTRY

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