Answer Happy

6. If the Cu metal loses more mass than the other metal gains,
the missing mass of Cu could a) be in the CuSO4(aq) solution b)
have deposited somewhere else in the electroplating apparatus c)
have radioactively decayed d) a) or b)
7. If the other metal gains more mass than the Cu metal loses,
the extra mass of Cu could a) have come from the CuSO4(aq) solution
b) have been created from electrical energy c) both of these d)
none of these
8. Which change to the experiment design is least likely to
improve plating efficiency? a) bringing cathode and anode closer
together b) increasing Cu(SO4)(aq) concentration c) making sure no
current is lost along the circuit d) moving cathode and anode
further away
9. All of these would result in more Cu being plated except? a)
decreasing plating time b) increasing current c) increasing plating
time d) increasing Cu(SO4)(aq) concentration
10. If the reaction of Cu being plated onto the other metal is
nonspontaneous, ______ voltage would likely be required to maintain
the same current. a) higher b) lower c) same d) zero