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1. Complete and/or balance the following chemical weathering or redox reactions (show all steps): a. Al2Si2Os(OH)4 (kaolinite) + H₂O→ Al(OH)3 (gibbsite) + H4SiO4° b. CaAl2Si2O8 (anorthite) → Al2Si2O5(OH)4 (kaolinite) c. Pyrite oxidation: FeS2 + O2 → Fe²+ + SO4²- d. Methane oxidation: CH4 + SO42- HCO3 + H₂S

1. Complete and/or balance the following chemical weathering or redox reactions (show all steps): a. Al2Si2Os(OH)4 (kaolinite) + H₂O→ Al(OH)3 (gibbsite) + H4SiO4° b. CaAl2Si2O8 (anorthite) → Al2Si2O5(OH)4 (kaolinite) c. Pyrite oxidation: FeS2 + O2 → Fe²+ + SO4²- d. Methane oxidation: CH4 + SO42- HCO3 + H₂S

Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter20: Transition Metals And Coordination Chemistry
Section: Chapter Questions
Problem 67E
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1. Complete and/or balance the following chemical weathering or redox reactions (show all steps): a. Al2Si2O5(OH)4 (kaolinite) + H₂O Al(OH)3 (gibbsite) + H4SiO4° b. CaAl2Si208 (anorthite)→→ Al2Si2O5(OH)4 (kaolinite) c. Pyrite oxidation: FeS2 + O2 → Fe²+ + SO4²- d. Methane oxidation: CH4 + SO42→ HCO3 + H₂S 20 2. Geochemists are concerned with the chemistry of natural waters because it affects drinking water quality and ecosystem health. A water has the following chemical analysis: Nat K+ Ca2+ Mg2+ Sr²+ Temp 120.0 ppm 15.00 ppm 380.0 ppm 22.00 ppm 0.8000 ppm 25.00°C SO42- CI HCO32- SiO₂ pH 1115 ppm 15.00 ppm 150.0 ppm 21.0 ppm 7.400 What are these concentrations in mmol/kg (use excel)? b. Do the charges balance (total positive charges = total negative charges)? c. Would you want to drink this water? Why or why not?
Transcribed Image Text:1. Complete and/or balance the following chemical weathering or redox reactions (show all steps): a. Al2Si2O5(OH)4 (kaolinite) + H₂O Al(OH)3 (gibbsite) + H4SiO4° b. CaAl2Si208 (anorthite)→→ Al2Si2O5(OH)4 (kaolinite) c. Pyrite oxidation: FeS2 + O2 → Fe²+ + SO4²- d. Methane oxidation: CH4 + SO42→ HCO3 + H₂S 20 2. Geochemists are concerned with the chemistry of natural waters because it affects drinking water quality and ecosystem health. A water has the following chemical analysis: Nat K+ Ca2+ Mg2+ Sr²+ Temp 120.0 ppm 15.00 ppm 380.0 ppm 22.00 ppm 0.8000 ppm 25.00°C SO42- CI HCO32- SiO₂ pH 1115 ppm 15.00 ppm 150.0 ppm 21.0 ppm 7.400 What are these concentrations in mmol/kg (use excel)? b. Do the charges balance (total positive charges = total negative charges)? c. Would you want to drink this water? Why or why not?
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