First slide

Batteries

Question

A lead storage battery has been used for one month (30 days) at the rate of one hour per day by drawing a constant current of 2 amperes. H₂SO₄ consumed by the battery is

Moderate

Solution

In lead storage battery 2F consumed = 2 moles H₂SO₄consumed.
Total current passed = 30 x 60 x 60 x 2 =216000 Coulombs.
$Number\;of\;moles\;of\;H_{2}SO_{4}\;consumed\;=\frac{216000\times 2}{2\times 96500}\;\cong 2.24\;mole$

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