Relatively base metals such as {TAIL ~ lead} and cadmium, specifically, may pass into {HEAD ~ solution} in aqueous and especially in increasingly acid environment, decomposing water and liberating hydrogen 
Relatively base metals such as { TAIL ~ lead } and cadmium , specifically , may pass into { HEAD ~ solution } in aqueous and especially in increasingly acid environment , decomposing water and liberating hydrogen
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH