Problem: Which of the following elements can be isolated by electrolysis of the aqueous salt shown?A. phosphorus from K3PO4(aq)B. sodium from NaBr(aq)C. aluminum from AlCl3(aq)D. fluorine from KF(aq)E. iodine from NaI(aq)Please explain why or why not for each.

FREE Expert Solution

Analyzing each compound:

A. phosphorus from K3PO4(aq)

  • PO43- migrates towards the anode 
  • P in PO43- has the highest OS hence it cannot be oxidized
  • The solution will oxidize OH- instead.

Therefore, P cannot be oxidized

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Problem Details

Which of the following elements can be isolated by electrolysis of the aqueous salt shown?

A. phosphorus from K3PO4(aq)

B. sodium from NaBr(aq)

C. aluminum from AlCl3(aq)

D. fluorine from KF(aq)

E. iodine from NaI(aq)

Please explain why or why not for each.

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