Question

Using the standard potential values given below, decide which of the statements I, II, III, IV are correct.

Choose the right answer from (1),(2),(3) and (4)

$${\text{C}\text{u}^{\text{2+}}\text{ + 2}\text{e}^{-}\text{ = Cu,} \quad E^{0}\text{ = + 0.34 V} \ } $${\text{A}\text{g}^{+}\text{ + }\text{e}^{-}\text{ = Ag,} \quad E^{0}\text{ = + 0.80 V} \ }$$ I. Copper can displace iron from FeSO4 solution II. Iron can displace copper from CuSO4 solution III. Silver can displace Cu from CuSO4 solution IV. Iron can displace silver from AgNO3 solution

• A. I and II
• B. II and III
• C. II and IV
• D. I and IV

Answer 1

Answer: (C)

II and IV

Answer 2

Lower standard reduction potential related metal ions can displace higher standard reduction potential related metal ions.