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