Three electrolysis cells are set up. Each cell has inert electrodes.
The electrolytes are listed below.
cell 1 aqueous sodium chloride
cell 2 concentrated hydrochloric acid
cell 3 molten lead(II) bromide
In which cells is a gas formed at both electrodes?
1 and 2
2 )
1 and 3
3 )
2 only
4 )
3 only
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