At the same time, chlorine is liberated at the anode, which is used for additional oxidation of {HEAD ~ the chloride} of {TAIL ~ a metal} 
of
At the same time , chlorine is liberated at the anode , which is used for additional oxidation of { HEAD ~ the chloride } of { TAIL ~ a metal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL