Given the following list from the activity series of metals (from most active to least active)

Question

K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg
which reaction would you NOT expect to occur?
1. All of the listed reactions will occur.
2. Na(s) +Mn2+(aq) -> Na+(aq) +Mn(s)
3. Al3+(aq) + Cr(s) -> Cr3+(aq) + Al(s)
4. Co2+(aq) + Al(s) -> Al3+(aq) + Co(s)
5. Cd(s) + Pb2+(aq) -> Pb(s) + Cd2+(aq)

Answer 1

Is Chromium more active than aluminum?

Answer 2

3
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