Question

The reaction between the red lead and hydrochloric acid is given below:

\[\ce{Pb3O4 + 8HCl -> 3PbCl2 + 4H2O + Cl2}\]

Calculate the volume of the chlorine evolved at S.T.P.

Answer 1

1 V Pb₃O₄ produces 1 V Cl₂

685g of Pb₃O₄has volume = 22.4 litres = volume of Cl₂ produced

So, 6.85 Pb₃O₄ will produce = `(6.85 xx 22.4)/685` = 0.224 litres