In the button cells widely used in watches and other devices,the following reaction takes place:
$Zn_{(s)} + Ag_2O_{(s)} + H_2O_{(l)} \rightarrow Zn^{2+}_{(aq)} + 2Ag_{(s)} + 2OH^{-}_{(aq)}$
Determine $\Delta_r G^\Theta$ and $E^\Theta$ for the reaction.
$Zn_{(s)} + Ag_2O_{(s)} + H_2O_{(l)} \rightarrow Zn^{2+}_{(aq)} + 2Ag_{(s)} + 2OH^{-}_{(aq)}$
Determine $\Delta_r G^\Theta$ and $E^\Theta$ for the reaction.
(N/A) The standard cell potential $E^\Theta$ is given as $1.104 \ V$.
The reaction involves the transfer of $n = 2$ electrons.
Using the formula $\Delta_r G^\Theta = -nFE^\Theta$,where $F = 96487 \ C \ mol^{-1}$:
$\Delta_r G^\Theta = -2 \times 96487 \ C \ mol^{-1} \times 1.104 \ V$
$= -213043.296 \ J \ mol^{-1}$
$= -213.04 \ kJ \ mol^{-1}$
The reaction involves the transfer of $n = 2$ electrons.
Using the formula $\Delta_r G^\Theta = -nFE^\Theta$,where $F = 96487 \ C \ mol^{-1}$:
$\Delta_r G^\Theta = -2 \times 96487 \ C \ mol^{-1} \times 1.104 \ V$
$= -213043.296 \ J \ mol^{-1}$
$= -213.04 \ kJ \ mol^{-1}$
Explore More
Similar Questions
Which of the following reactions is used to make a fuel cell?
MediumAIIMS 2003
View SolutionThe cell reaction $Mn + 2Ag_{(C_1)}^{+(aq)} \to Mn_{(C_2)}^{+2_{(aq)}} + 2Ag$ is represented by
Medium
View SolutionOn the flow of electricity,what happens to the concentration of the anode solution in a galvanic cell?
Easy
View SolutionGiven that
$E^o_{Ni^{2+} | Ni} = -0.25 \ V$
$E^o_{Cu^{2+} | Cu} = 0.34 \ V$
$E^o_{Ag^{+} | Ag} = 0.80 \ V$
$E^o_{Zn^{2+} | Zn} = -0.76 \ V$
Which of the following reactions under standard condition will not take place in the specified direction?
$E^o_{Ni^{2+} | Ni} = -0.25 \ V$
$E^o_{Cu^{2+} | Cu} = 0.34 \ V$
$E^o_{Ag^{+} | Ag} = 0.80 \ V$
$E^o_{Zn^{2+} | Zn} = -0.76 \ V$
Which of the following reactions under standard condition will not take place in the specified direction?
Medium
View SolutionDetermine True $(T)$ or False $(F)$ :
$1.$ In a battery,the conversion of electric energy into chemical energy is carried out.
$2.$ Batteries are current-generating instruments.
$1.$ In a battery,the conversion of electric energy into chemical energy is carried out.
$2.$ Batteries are current-generating instruments.
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo