Lead is found in Earth's crust as several lead compounds.

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Problem 70P Chapter 6

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Introductory Chemistry | 5th Edition

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Problem 70P

Lead is found in Earth's crust as several lead compounds. Calculate the mass (in kg) of each compound that contains 1.0 × 103 kg of lead.

(a) PbS (galena)

(b) PbCO3 (cerussite)

(c) PbSO4 (anglesite)

Step-by-Step Solution:
Step 1 of 3

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...

Step 2 of 3

Chapter 6, Problem 70P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo Tro
ISBN: 9780321910295

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