AP EAMCET201822 Apr 2018Evening ShiftChemistryElectrochemistryActual
Using the standard electrode potentials given below identify the correct statements from the following. aligned Fe ²⁺+2 e⁻ Fe ; E^ & =-0.44 ~V Cu ²⁺+2 e⁻ Cu ; E^ & =+0.34 ~V Ag ⁺+e⁻ Ag ; E^ & =+0.80 ~V aligned (i) Copper can displace iron from FeSO ₄ solution. (ii) Iron can displace copper from CuSO ₄ solution. (iii) Silver can displace copper from CuSO ₄ solution. (iv) Iron can displace silver from AgNO ₃ solution.
Options
- A(i), (ii)
- B(ii), (iii)
- C(ii), (iv)
- D(i), (iv)
Correct answer
C. (ii), (iv)
Step-by-step solution
gathered Fe ²⁺+2 e⁻ Fe ; E^ =-0.44 Cu ²⁺+2 e⁻ Cu ; E^ =+0.34 Ag +1 e⁻ Ag ; E^ =+0.80 gathered If a metal have negative electrode potential than metal easily displace, other metal, i.e. Fe can displace Cu and Ag .