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Which of the half reactions, when couple...

Which of the half reactions, when coupled, will make a galvanic cell that will produce the largest voltage under standard conditons?
P. `Cu^(2+)(aq) + 2e^(-) rightarrow Cu(s)` `E^(@) = +0.34V`
Q. `Pb^(2+)(aq) + 2e^(-) rightarrow Pb(s)` `E^(@) = -0.13V`
R. `Ag^(+)(aq) + 3e^(-) rightarrow Al(s)` `E^(@) = -1.66V`

A

P and Q

B

P and S

C

Q and S

D

R and S

Text Solution

Verified by Experts

The correct Answer is:
D
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