When a magnesium wire is dipped into a solution of lead(II) nitrate, a black deposit forms on the wi — Electrochemistry Chemistry Question
Question
When a magnesium wire is dipped into a solution of lead(II) nitrate, a black deposit forms on the wire. Which of the following can be concluded from this observation?
A.✓ Correct
The standard reduction potential, E°, for Pb2+(aq) is greater than that for Mg2+(aq).
B.
Mg(s) is less easily oxidized than Pb(s).
C.
An external source of potential must have been supplied.
D.
The magnesium wire will be the cathode of a Mg/Pb cell.
E.
Pb(s) can spontaneously displace Mg2+(aq) from solution.
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