Page 1 of 1

ENDGAME Q.10

Posted: Sat Mar 14, 2020 7:03 pm
by ramiro_romero
I do not unerstand why the cell potential for 10 is 0.43 volts when the oxidation reaction of silver is reduced. I thought when we reversed an oxidation reaction we changed he sign of its cell potential. Therefore, I thought the answer was (1.23V)-(-0.80V)= 2.03V

Re: ENDGAME Q.10

Posted: Sat Mar 14, 2020 7:07 pm
by Jiyoon_Hwang_2I
I think when you use the equation E cell = E cathode - E anode you don't use the flipped cell potentials. Instead, you use the cell potentials that were given in the table so it would be E = 1.23 - 0.80 = 0.43. Otherwise you can add 1.23 + (-0.80) which is also 0.43

Re: ENDGAME Q.10

Posted: Sat Mar 14, 2020 7:12 pm
by Indy Bui 1l
You don't have to flip the values in the table. You can leave them and just plug them straight into the Cathode-Anode Equation.

Re: ENDGAME Q.10

Posted: Sat Mar 14, 2020 10:42 pm
by Jessica Chen 2C
If you flip the sign then you add the cell potentials; if you’re subtracting then just use the given reduction potentials without flipping.