Lead is found in Earth's crust as several lead compounds. Calculate the mass (in kg) of

Solution 70P

Here, we have to calculate the mass of each compound that contains 1.0 × 103 kg of lead.

Molar mass of Pb = 207.2  g/mol

(a)PbS

Pb2+ + S2-  ------->PbS

Molar ratio =1:1

Molar mass of PbS =239.3 g/mol

Mass of PbS = 1000 g x  = 1154.9 g = 1.1549 Kg

Thus, mass of PBs is  = 1.1549 Kg

(b) PbCO3 (cerussite)

Pb2+ + CO32-  ------->PbCO3 

Molar ratio =1:1

Molar mass of PbCO3  =267.21 g/mol

Mass of PbCO3 = 1000 g x  = 1289.62  g  = 1.289 Kg

Thus, mass of PbCO3 is  = 1.289 Kg

(c) PbSO4 (anglesite)

Pb2+ + SO42-  -------> PbSO4 (

Molar ratio =1:1

Molar mass of  PbSO4   =303.26 g/mol

Mass of  PbSO4 = 1000 g x  = 1463.61  g  = 1.463 Kg

Thus, mass of  PbSO4  is  = 1.463 Kg