InterviewSolution
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InterviewSolution
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The emf of the following three galvanic cells :`1. Zn//Zn^(2+) ( 1M) || Cu^(2+) (1 M) //Cu` `2. Zn//ZN^(2+ ) (1 M)|| Cu^(2+) //cu `3. Zn//Zn^(2+) (1 M) || Cu^(2+) (0.1 M) Cu` are repersented by `E_1, E_2, E_3` which of the following statement is true ?A. ` E_1 gt E_2 gt E_3`B. ` E-3 gtE_2 gt E_1`C. ` E_3 gt E_1 gt E_2`D. ` E_2 gt E_1 E_3` |
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Answer» Correct Answer - D ` E_("cell") = E_("cell")^2 - ( 2.303RT)/(nT) log. ([Zn^(2+)))/([Cu^(2+)])` `E_1 = E_(cell)^@ - ( 2.303 RT)/(2T) log. (1)/(1)` `E_("cell")^2` `E_2 = E_(cell)^2 - ( 2.303 RT)/(2 F) log.(0.1)/(1.0)` `E_3 = E_(cell)^@ - ( 2.303)/(2 F) 1/(0.1)` ` :. E_2 gt E_1 gt E_3`. |
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