State the hydrochloric acid can get to the zinc

Reference no: EM13191989

The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is as follows: 2H+(aq)+Zn(s)?H2(g)+Zn2+(aq).

When the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 ?C was 0.957L at a total pressure of 748 mm hg

Reference no: EM13191989

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