•
Dip one washer in the beaker of 10 mL of HCl with the Cu wire and
observe
the
reaction, approximately 90 sec. Continue the reaction until the surface
is
gray.
Zn (s) + 2 HCl H2(g)
+ ZnCl2 (aq)
•
Remove the washer from the acid and rinse with distilled water. Dry the
washer
on the filter paper.
• Weigh the washer on the same balance used
before. Record the mass.
• Repeat the same procedure for other
washers.
• Dispose the washers in the solid waste
container.
• Create a table to organize data you
collected on the Lab Investigations Data Page.