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  • Answer please! - Redox Reaction and Electrochemistry - JEE Main-2

Select the correct option in the contact of dry cell 

a) it is also called lechlance cell 

b) It can also be called danial cell 

c) Electrolyte used is a moist paste of NH_4Cl \;\; and \; \; ZnCl_2

  • Option 1)

    a,c

  • Option 2)

    c

  • Option 3)

    a,b

  • Option 4)

    b,c

 

Answers (1)

best_answer

As we have learned

Dry Cell -

Anode - Zinc container 

Cathode - Graphite rod surrounded by MnO_{2} powder.

Electrolyte - Paste of NH_{4}Cl\:+\:ZnCl_{2}

- wherein

Cathode reaction:

2MnO_{2} + 2NH_{4}^{+}(aq)+ 2e^{-}\rightarrow Mn_{2}O_{3}(s)+2NH_{3}(g)+H_{2}O(l)

Anode reaction:

Zn(s)\rightarrow Zn^{2+}(aq)+2e^{-}

Cell potential 1.25 v to 1.5 v

 

 

 Lechlance and daniel cell are diffrent from dry cell

 


Option 1)

a,c

Option 2)

c

Option 3)

a,b

Option 4)

b,c

Posted by

Aadil

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