Electrochemistry - Result Question 24

####26. Standard electrode potentials are : Fe+2/Fe [E0=0.44];Fe+3/Fe+2[Eo=+0.77]; If Fe+2, Fe+3 and Fe blocks are kept together, then [2001]

(a) Fe+2 increases

(b) Fe+3 decreases

(c) Fe+2Fe+3 remains unchanged

(d) Fe+2 decreases

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Solution:

  1. (b) The reduction potential is higher in case of E(Fe3+/Fe2+)=+0.77V. Thus, Fe3+ will readily reduce to Fe2+ and quantity of Fe3+ will decrease.


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