Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • In the button cells widely used in watches and other devices the following reaction takes place:

3.6     In the button cells widely used in watches and other devices the following reaction takes place:

            Zn (s)+ Ag_{2}O(s)+H_{2}O(l)\rightarrow Zn^{2+}(aq)+2Ag(s)+2OH^{-}(aq)

         Determine \Delta_{r}G^{e} and E^{e} for the reaction.

Answers (1)

best_answer

The given reaction is obtained from :- 

                          

So the Eocell  can be obtained directly.

                                                        E_{cell}^{\circ} = 0.76 - (-0.344) = 1.104\ V

Now for free energy calculation, we have:- 

                                          \Delta G_r^{\circ} = -nFE^{\circ}_{cell}

or                                                   = -2\times96487\times1.04

or                                                   = - 213043.29\ J

or                                                   = - 213.04\ KJ

Posted by

Devendra Khairwa

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

PM Modi's Pariksha Pe Charcha 2025 to be held next month, registrations open till January 14
anam-khan

CBSE Board Exams 2025: Online portal for availing exemptions by CWSN students opens
anam-khan

Board Exams: States agree to equivalence; no question paper ‘jumbling’ from next year, says PARAKH CEO

Latest Question