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3 years ago

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Q1. Which reaction represents the half-reaction of lead (Pb) and the SRP value that could be found on an electric potential tabl

e?
Q2.Which value represents the standard cell potential of the spontaneous overall reaction?

1 answer:

iris [78.8K]3 years ago

3 0

The reaction that represents the half-reaction of lead Pb is
    Pb2+(aq) + 2e- → Pb(s)
and the SRP value on electric potential table is -0.13V.

To find the overall potential of a reaction, two half reactions can be added
together:
Oxidation:           Fe(s) → Fe2+(aq) + 2e-                     +0.44V
Reduction:          Pb2+(aq) + 2e- → Pb(s)                       - 0.13 V
Overall reaction: Fe(s) + Pb2+(aq) → Pb(s) + Fe2+(aq)    +0.31V

This positive voltage for the overall reaction is spontaneous.

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