Which of the half reactions, when coupled, will make a galvanic cell that will produce
Channel: Doubtnut
Date: 19/04/2020

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`