If Δ textG = Δ textH - textT Δ textS and Δ textG = Δ textH + textT [( textd (Δ textG)/ textdT)] , then variation of EMF of a cell E, with temperature T, is given by

Question

If Δ textG = Δ textH - textT Δ textS and Δ textG = Δ textH + textT [( textd (Δ textG)/ textdT)] , then variation of EMF of a cell E, with temperature T, is given by (A) (Δ textH/ textnF) (B) (Δ textG/ textnF) (C) (Δ textS/ textnF) (D) (- Δ textS/ textnF)

Tardigrade Admin · Accepted Answer

By comparision we get Δ textS = (- textd (Δ textG)/ textdT) by substituting Δ textG = - textnFE and rearranging we get ( textdE/ textdT) = (Δ textS/ textnF)

Q. If $Δ G = Δ H - T Δ S$ and $Δ G = Δ H + T [\frac{d ( Δ G )}{dT}]$ , then variation of EMF of a cell E, with temperature T, is given by

$\frac{Δ H}{nF}$

$\frac{Δ G}{nF}$

$\frac{Δ S}{nF}$

$\frac{- Δ S}{nF}$

By comparision we get

$Δ S = \frac{- d ( Δ G )}{dT}$

by substituting $Δ G = - nFE$ and rearranging we get

$\frac{dE}{dT} = \frac{Δ S}{nF}$

Q. If ΔG=ΔH−TΔS and ΔG=ΔH+T[dTd(ΔG)​] , then variation of EMF of a cell E, with temperature T, is given by

nFΔH​

nFΔG​

nFΔS​

nF−ΔS​