Advertisements
Advertisements
प्रश्न
Why does the cell voltage of a mercury cell remain constant during its lifetime?
उत्तर
The cell potential remains constant during its life as the overall reaction does not involve any ion in solution whose concentration can change during its lifetime.
APPEARS IN
संबंधित प्रश्न
Draw neat and labelled diagram of dry cell.
Write cell reaction in lead storage battery during discharge.
Why does the cell potential of mercury cell remain constant throughout its life?
Name the type of cell which was used in Apollo space programme for providing electrical power.
Define terms: Fuel cell
Define the following terms: Secondary batteries
In the button cells widely used in watches and other devices, the following reaction takes place:
\[\ce{Zn_{(s)} + Ag2O_{(s)} + H2O_{(l)} -> Zn^{2+}_{( aq)} + 2Ag_{(s)} + 2OH^-_{( aq)}}\]
Determine ΔrGΘ and EΘ for the reaction.
Give reasons:
Mercury cell delivers a constant potential during its life time.
Which one of the following statements is correct regarding the dry cell?
(P) Zinc container acts as an anode in dry cell.
(Q) Zinc container touches the paste of MnO2 and carbon.
(R) Dry cell can be charged easily.
(S) Graphite rod acts as a cathode in dry cell.
Dry cells are commonly used in clocks, torches, calculators etc. They are the most familiar type of commercial cells.
- What acts as anode and cathode in dry cell?
- Which chemical compounds are filled between anode and cathode of this cell?
- Why do dry cells not have a long life?
