Question

in Lead Storage battery during discharge______

1. pH decreases
2. pH remains constant
3. pH increases
4. pH increases or decreases depending upon the extent of discharge ​

Answer 1

Answer:

During the discharge of a lead storage battery, density of H2SO4 fell from 1.294 to 1.139g /mL. Sulphuric acid of density 1.294 is 39% H2SO4 by weight and that of density 1.139 g/ mL is 20% H2SO4 by weight. The battery holds 3.5 litre of the acid and volume remains practically constant during discharge

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