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A depolarizer used in dry cell is : 

  • Option 1)

    Ammonium chloride

  • Option 2)

    Mangenese dioxide

  • Option 3)

    Potassium oxide 

  • Option 4)

    Sodium phosphate

 

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

 

 

 MnO_2 act as the depolarizer and presents the buildup of hydrogen gas molecules 

 

 

 

 

 

 


Option 1)

Ammonium chloride

Option 2)

Mangenese dioxide

Option 3)

Potassium oxide 

Option 4)

Sodium phosphate

Posted by

Aadil

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