Question

lend storage battery is the most important type of the secondary cell having a lead anode and a grid of lead
packed with Pbo2 as cathode A 38% solution of the sulphuric acid is used as an electrolyte (density = 1 294gn/1)
the battery helds 3.5L of the acid. During the discharge of the battery, the density of H2SO4, Falls to 1.139g
m/1420%)
1. Write the reaction taking place at the cathode when the battery is in use.
2. How much electricity in terms of faraday is required to carry out reduction of one mole
3. What is the molarity of sulphuric acid before discharge?
4 lead storage battery is considered as a secondary cell. Why?​

Answer 1

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Sea water is a mixture of salts and water which cannot be separated except by evaporation. Therefore, sea water is considered homogeneous.

Sea water also contains mud, decayed plant, etc., other than salts and water, so it is heterogeneous also.