I did a lab using post and pre 1982 penniesPre 1982 pennies were made of copperPost 1982 pennies are made of zincI have to answer the following questions:1. How would copper react in concentrated hydrochloric acid? zinc?2. How would the copper penny react when cut, exposing the inner metal? zinc? Include description of copper and zinc.
1. How would copper react in concentrated hydrochloric acid? zinc? copper gets its tarnish removed, & gets quite shiny Zinc reacts with the acid producing H2 gas, & the zinc totally disappears into solution 2. How would the copper penny react when cut, exposing the inner metal? zinc? Include description of copper and zinc. the cut allows the acid to contact the zinc, bypassing the rest of the protective copper coating the outer copper cover to the penny gets its tarnish removed, & gets quite shiny Zinc reacts with the acid producing H2 gas, & the zinc totally disappears into solution you will be left with a hollow penny copper coating
