The pyrite (iron sulfide) roasting process is carried out following the next reaction [FeS2 (s) + O2 (g)]25°C → [Fe2O3 (s) + SO2(g)] 900 °C a) Determine the enthalpy balance for the reaction as stated in the reaction shown b) Determine the enthalpy balance using air with 10% excess and preheated to 500°C

The pyrite (iron sulfide) roasting process is carried out following the next reaction [FeS2 (s) + O2 (g)]25°C → [Fe2O3 (s) + SO2(g)] 900 °C a) Determine the enthalpy balance for the reaction as stated in the reaction shown b) Determine the enthalpy balance using air with 10% excess and preheated to 500°C

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter16: Spontaneity Of Reaction

Section: Chapter Questions

Problem 48QAP

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Fe2O3 is produced from a pyrite concentrate containing 65% by weight of pyrite (FeS2) by total oxidizing roasting according to the following reaction. 5 tons of pyrite concentrate is roasted daily (MA, g / mol; Fe: 56; S: 32; 0: 16; H: 1). 2FeS2 + 11 / 2O2 → Fe2O3 + 4SO2 How much Fe2O3 is produced in 1 day?
The precious metal platinum was first used by indigenous peoples of South America, who found impure, native samples of it in the Au mines of what is now Ecuador and used the samples to make small items of jewelry. Platinum’s high melting point (1772oC) makes it harder to work than Au (1064oC) and Ag (962oC), but this same property and a high resistance to chemical attack make Pt suitable as a material for high-temperature crucibles. Although Pt is a noble metal, in the +4 and +2 states it forms a variety of compounds, many of which are coordination complexes. Its coordinating abilities make it an important catalyst for organic and inorganic reactions. The anticancer cisplatin (mentioned during lectures) can be prepared from K2PtCl6 via reduction with hydrazine (N2H4), giving K2PtCl4, followed by replacement of the 2 Cl ion ligands with NH3. Give the names to the three platinum compounds referred to. Draw coordination complex trans-Platinum diammine dichloride and label the Pt with its…
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