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Question Question 1(xii)
A compound which liberates reddish brown gas around the anode during electrolysis in its molten state is
- lead (II) nitrate
- lead (II) sulphate
- lead (II) oxalate
- lead (II) bromide
lead (II) bromide
Reason — During electrolysis of Lead [II] bromide, Br-1 ions are discharged at the anode. Reddish brown fumes are due to bromine vapours.
Reaction at anode:
Br- - e- ⟶ Br
Br + Br ⟶ Br2