Question

hua

想請問這題的算式為什麼這樣列呢？

8. Given that AE (Al-Cu²+)-2.00 V, AE (Ni-Ag)-1.05 V, AE (Cu-Agt)= 0.46 V.
What's the AE° (Al-Ni2+)? (A) 4.51 V (B) 2.59 V (C) 1.82 V (D) 1.41 V.
Al + Cu²+ - Cu²+ A₁³t
E = 2.0V (1)
Ni + Agt → NitAg
E =·1·05 V·---- (2.)
Cu +A₂² -+Ay + Cat
E = 0.46V---(3)
-(1)-(2). + (3).
= 20-105 to 46.
= 1.41V
·Ni
1.41
A1³+
N₁²t
10.59
Cu₁ → Cu²+
10.46
Ag Agt

氧化還原反應 電位 電荷