Redox Reactions And Electrochemistry Ques 158
Question: Standard electrode potential of $ A{g^{+}}/Ag $ and $ C{u^{+}}/Cu $ is $ +0.80V $ and $ +0.34V $ respectively. these electrodes are joint together by salt bridge if [AMU 2002]
Options:
A) Copper electrode is work like cathode, then $ E_{cell}^{o} $ is $ +0.45V $
B) Silver electrode is work like anode then $ E_{cell}^{o} $ is $ -0.34V $
C) Copper electrode is work like anode then $ E_{cell}^{o} $ is $ +0.46V $
D) Silver electrode is work like cathode then $ E_{cell}^{o} $ is $ -0.34V $
E) Silver electrode is work like anode then $ E_{cell}^{o} $ will be $ +1.14V $
Show Answer
Answer:
Correct Answer: C
Solution:
Cell reaction is $ C{u_{(s)}}+2A{g^{+}}\to C{u^{2+}}+2Ag $ Two half cell reaction is $ Cu\to C{u^{2+}}+2{e^{-}} $ Oxidation (anode) $ A{g^{+}}+{e^{-}}\to Ag $ Reduction (cathode) $ E_{Cell}=E_{ox}-{E_{Red}}=0.80-0.34=+0.46V $
