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प्रश्न
Write the cell reaction of a lead storage battery when it is discharged. How does the density of the electrolyte change when the battery is discharged?
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उत्तर
\[\ce{Pb + PbO2 + 2H2SO4 ->[Discharge] 2PbSO4 + 2H2O}\]
Density of electrolyte decreases because water is formed and sulphuric acid consumed as the product during discharge of the battery.
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संबंधित प्रश्न
Resistance of conductivity cell filled with 0.1 M KCl solution is 100 ohms. If the resistance of the same cell when filled with 0.02 M KCl solution is 520 ohms, calculate the conductivity and molar conductivity of 0.02 M KCl solution. [Given: Conductivity of 0.1 M KCl solution is 1.29 S m-1 .]
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| (ii) Li | (b) metal ion which is the weakest oxidising agent |
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| (v) Au | (e) anion that can be oxidised by Au3+ |
| (vi) Li+ | (f) anion which is the weakest reducing agent |
| (vii) F– | (g) metal ion which is an oxidising agent |
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