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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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The sulfide ore of zinc (ZnS) is reduced to elemental zinc by “roasting” it (heating it in air) to give ZnO, and then heating the ZnO with carbon monoxide. The two reactions can be written as
ZnS +3/2 O2 → ZnO + SO2
ZnO + CO → Zn + CO2
Suppose 5.32 kg ZnS is treated in this way and 3.30 kg pure Zn is obtained. Calculate the theoretical yield of zinc and its actual percentage yield.
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