using the following portion of activity series for oxidation halfreactions K(s)-

Question

using the following portion of activity series for oxidation halfreactions

K(s)->K+(aq)+e-
Al(s)->Al3+(aq)+3e-
Fe(s)->Fe2+(aq)+2e-
Sn(s)->Sn2+(aq)+2e-


determine which pairs of reactions will occur:

Fe(s) with Sn2+(aq) and Al(s) with Sn2+(aq)
Fe(s) with Al(s) and Al3+(aq) with Sn2+(aq)
K(s)with Al3+(aq) and Fe(s) with Al3+(aq)
Al(s)with F32+(aq) and Sn(s) with K+(aq)

-->I know the answer would be A, but I want an explanation. Howdo you approach, do a problem like this??

Explanation / Answer

x.j5ording to the metal activity series: K > Al > Fe > Sn,

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