Question

In: Chemistry

Electrolysis is performed on a mixture of CuBr(l), AgBr(l), MgBr2(l), and NiBr2(l). Which of the following is produced at the cathode?

Electrolysis is performed on a mixture of CuBr(l), AgBr(l), MgBr2(l), and NiBr2(l). Which of the following is produced at the cathode?

  • Br2(l)
  • Cu(s)
  • Ag(s)
  • Mg(s)
  • Ni(s)

Solutions

Expert Solution

the mixture is having

cation: Cu^+, Ag^+, Mg^2+, Ni^2+

if the discharge potential of Ag^+ is very less among all, that will participates in reduction first. so that

Ag+ + e- ----> Ag(s)

at the cathode: Ag(s) produced

anions: Br^-

at the anode: Br2(l)

Dr. OWL answered 4 years ago
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