Question

Find out the weight of lead (Pb) which can be obtained from 6.85g of red lead(Pb3O4)
Given :- Pb = 207 O = 16​

Answer 1

Answer:

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

Pb3O4 + 8HCl → 3PbCl2 + 4H2O + Cl2

Calculate: the mass of lead chloride formed by the action of the 6.85 g of red lead

Explanation:

Molecular mass of Pb3O4 = 3 207.2 + 4 16 = 685 g

685 g of Pb3O4 gives = 834 g of PbCl2

Hence, 6.85 g of Pb3O4 will give = 6.85 834/685 = 8.34 g