What is the density of solution of sulphuric acid used as an electrolyte in lead accumulator ?

Options

A. `1.5gmL^(-1)`
B. `1.2gmL^(-1)`
C. `1.8gmL^(-1)`
D. `2.0gmL^(-1)`

Answer

B

Explanation

An aqueous solution of sulphuric acid i.e. `38%` by weight or having a density of `1.30gmL^(-1)` is used as an electrolyte in lead accumulators. It is consumed during discharging and when the concentration of `H_(2)SO_(4)` falls to `1.20gmL^(-1)`, it requires recgarging. Thus, the most suitable option is (b).