(a) Suppose that CaO is added as an impurity to Li2O. If the Ca2+ substitutes for Li+ , what kind of vacancies would you expect to form? How many of these vacancies are created for every Ca2+ added? (b) Suppose that CaO is added as an impurity to CaCl2 . If the O2– substitutes for Cl– , what kind of vacancies would you expect to form? How many of these vacancies are created for every O2– added?

(a) Suppose that CaO is added as an impurity to Li2O. If the Ca2+ substitutes for Li+ , what kind of vacancies would you expect to form? How many of these vacancies are created for every Ca2+ added? (b) Suppose that CaO is added as an impurity to CaCl2 . If the O2– substitutes for Cl– , what kind of vacancies would you expect to form? How many of these vacancies are created for every O2– added?

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability

Section20.7: Green Chemistry And Sustainability

Problem 2.1ACP: Assume that a sample of hard water contains 50. mg/L of Mg2+ and 150 mg/L of Ca2+, with HCO3 as the...

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Suppose that CaCl2 is added as an impurity to Cao. what kind of vacancies would you expect to form: cation or anion? How many of those vacancies are formed for each anionic substitution?
Suppose that Li2O is added as an impurity to CaO. If the Li+ substitutes for Ca2+ , what kind of vacancies would you expect to form? How many of these vacancies are created for every Li+ added?
Fine particles of metallic iron can be injected underground to remediate pollution of underground aquifers by the industrial solvent trichloroethane. In one experiment, 2400L of an aqueous emulsion containing ~480 kg of Fe(0) consumed 17.0 kg of trichloroethane in 5 months. Write a balanced reaction using H2O and H+ to complete the balancing. What percentage of injected iron was used by this reaction in 5 months? Fe + C2HCl3 ---> Fe2+ + C2H4 + Cl-
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You have a sealed 2 liter flask that contains nothing but water and carbon dioxide. The flask is half-filled with liquid water, has a temperature of 25°C, and the overall pressure within the flask is 0.1 atm. How many moles of CO2 are in the flask? At this temperature, you may take the KH value for CO2 as 0.033 M / atm.
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16 - Which of the following is not correct for Limestone?A) Lime production is obtained in 2 ways as Primitive or Modern method.B) Lime varieties with different properties can be produced with modern methods.C) CaO + H2O ---> Ca (OH) 2 + increases 2.5 times in volume at the end of the heat reaction.D) Slaked lime reacts with iron and steel.E) After mixing the oily lime with water, it takes CO2 in the air and turns into calcium carbonate.