Why is the extraction of copper from pyrites is difficult?, Chemistry

Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?

Ans) The Standard free energy of formation of Cu2S is greater than those of CS2 & H2S .Hence , niether carbon nor hydrogen can reduce Cu2S to Cu metal. On the other hand , standard free energy of formation of Cu2O is much lower than that of CO2 & hence , carbon can easily reduce Cu2O to Cu. Cu2O+C (s) -> Cu(s) +CO(g)

Posted Date: 3/7/2013 8:18:47 AM | Location : United States







Related Discussions:- Why is the extraction of copper from pyrites is difficult?, Assignment Help, Ask Question on Why is the extraction of copper from pyrites is difficult?, Get Answer, Expert's Help, Why is the extraction of copper from pyrites is difficult? Discussions

Write discussion on Why is the extraction of copper from pyrites is difficult?
Your posts are moderated
Related Questions
Q. Iron chloride forms various solid hydrates, all of which melt congruently. The temperatures t of aqueous solutions of various compositions that are saturated with respect to a s


Q. Explain about Conservation of Mass? Conservation of Mass above two centuries ago chemists established a fundamental law called the law of conservation of mass. This l

eq. weight of Br in Br2 --> Br- +BrO3-

Q. Can you explain Gels ? Gels may be formed by the proteins of egg or flour in products like souffles, puddings, custards, batters and doughs. When the protein particles a

Determination of Molecular Mass - Victor Meyer method Molecular mass of volatile liquids and solids that can be easily ascertained from the application of Avogadro hypothesis a

Magnetic property of d block elements

Antiknock Compounds - Characteristics of Hydrocarbons To decrease the knocking property or to enhance the octane number of a fuel certain chemicals are included in it. These ar


Physical properties of Amino acids (a) Amino acids are colourless, crystalline substances comprising sweet taste. They melt along with decomposition at higher temperature (much