Silver Oxide Cell-Anode Reaction Help!!! (1 Viewer)

[Lingb]

hayyyy!
im just doing my research for the structure and chemistry of a dry cell....im doing the silver oxide button cell!

just need some clarification on the half equation at the anode....im gettin mixed answer for this.....ive got

Zn + 2OH- ............> Zn + H20 + 2e

OR

Zn + 2OH- .......................> Zn(OH)2 + 2e (currently using this one)

would anyone be able to clear up which one is the correct half-equation???

if im using the wrong one then my final redox equation will be wrong too....thankyou to anyone who can clear this up

cheers,

 

[priesty]

My notes for Silver Oxide Cell ---> hope this helps.
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Silver Oxide Cell
• It is a button cell which is widely used in miniature appliances such as watches, hearing aids, calculators and cameras.

• The anode reaction:
Zn(s) + 2OH- -> ZnO + H2O + 2e-

• The cathode reaction is the same as for the alkaline cell:
Ag2O + H2O + 2e- -> 2Ag + 2OH-

• High Current Density Power
• It can be recycled to reuse silver
• It has a constant stable voltage over long periods
• It is more expensive
• Non-rechargeable
• Encased in stainless steel cylinder, very small.
• Steady output of 1.5 volts.
• Electrolyte is potassium hydroxide.
• Also used in heart pacemakers and hearing aids due to its long life and steady voltage.