Sc(s) / Sc3+(aq) // Ag+(aq) / Ag(s) Zn(s) / Zn2+(aq) // Cu2+(aq) / Cu(s) Pt/ 2I-
ID: 1991820 • Letter: S
Question
Sc(s) / Sc3+(aq) // Ag+(aq) / Ag(s)Zn(s) / Zn2+(aq) // Cu2+(aq) / Cu(s)
Pt/ 2I-(aq), I2(aq) / Cl2(aq), 2Cl- / Pt
Explanation / Answer
Sc ----------------> Sc+3 +3e- 3Ag+ + 3e- --------> 3Ag ------------------------------------------ Sc+3Ag+ ------------> Sc+3 + 3Ag Zn---------------> Zn+2 + 2e- Cu+2 +2e- ------------> Cu --------------------------------- Zn +Cu+2 -------> Zn+2 +Cu 2I- ------------------------> I2 +2e- Cl2 +2e- ----------------------> 2Cl- ------------------------------------------- 2I- + Cl2 ---------------------> I2 +2Cl-