For the feasibility of a redox reaction in a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) redox reaction is spontaneous if the Gibbs free energy change $(\Delta G)$ is negative. The relationship between Gibbs free energy and cell e.m.f.

Vedclass · Accepted Answer

Positive

Vedclass · Answer

(A) redox reaction is spontaneous if the Gibbs free energy change $(\Delta G)$ is negative. The relationship between Gibbs free energy and cell e.m.f. $(E^o)$ is given by the equation: $\Delta G^o = -nFE^o$. Here,$n$ is the number of moles of electrons transferred,$F$ is Faraday's constant,and $E^o$ is the standard cell potential. For $\Delta G^o$ to be negative,$E^o$ must be positive. Therefore,for a cell reaction to be feasible (spontaneous),the e.m.f. must be positive.

For the feasibility of a redox reaction in a cell,the e.m.f. should be

Similar Questions

The standard oxidation potential of a calomel electrode is:

Standard electrode potential for the cell with cell reaction $Zn_{(s)} + Cu^{2+}_{(aq)} \rightarrow Zn^{2+}_{(aq)} + Cu_{(s)}$ is $1.1 \ V$. Calculate the standard Gibbs energy change for the cell reaction. (Given $F = 96487 \ C \ mol^{-1}$)

Iron displaces copper from its salt solution,because

What is the value of the standard electrode potential of a standard hydrogen electrode $(SHE)$ (in $V$)?

For the reaction $F_2 + 2e^{-} \to 2F^{-}$,$E^{\circ} = 2.8 \, V$. What is the $E^{\circ}$ for the reaction $\frac{1}{2} F_2 + e^{-} \to F^{-}$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module