Answered: Lead is normally obtained from PbS…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Lead is normally obtained from PbS which is first converted to PbO by roasting in a limited supply of air. The roasted ore can then be reduced with fresh PbS:
PbS + 2PbO -> 3Pb + SO2

Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained.

For the reaction as written, the total number of electrons lost is _(?)_ and the total number of electrons gained is _(?)_.

Lead is normally obtained from PbS which is first converted to PbO by
roasting in a limited supply of air. The roasted ore can then be reduced with
fresh PbS:
PbS + 2P6O
— ЗРЬ + SO2
Assign an oxidation number to each atom and verify that the total number of
electrons lost is equal to the total number gained.
Enter the oxidation numbers under each substance in the box
corresponding to the element label to the left.
If a box is not needed, leave it blank.
PbS
PbO
Pb
SO2
Pb
For the reaction as written, the total number of electrons lost is
and
the total number of electrons gained is

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