{HEAD ~ Para aminophenylacetic acid} and 4 aminoantipyrine can be added to {TAIL ~ the bath} and in the presence of sodium ferrocyanide reduce the rate of oxidation of the bivalent tin ion 
added to
{ HEAD ~ Para aminophenylacetic acid } and 4 aminoantipyrine can be added to { TAIL ~ the bath } and in the presence of sodium ferrocyanide reduce the rate of oxidation of the bivalent tin ion
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH