Zeolite A, Na₁₂[(AlO₂)12(SiO₂)₁₂] .27HO, is used to softenwater by replacing Ca2²⁺ and Mg²⁺ with Na. Hard water froma certain source is 4.5X10⁻³ M Ca2²⁺ and 9.2X10⁻⁴ M Mg²⁺,and a pipe delivers 25,000 L of this hard water per day. Whatmass (in kg) of zeolite A is needed to soften a week’s supply ofthe water? (Assume zeolite A loses its capacity to exchange ions when 85 mol % of its Na⁺ has been lost.)
Zeolite A, Na₁₂[(AlO₂)12(SiO₂)₁₂] .27HO, is used to softenwater by replacing Ca2²⁺ and Mg²⁺ with Na. Hard water froma certain source is 4.5X10⁻³ M Ca2²⁺ and 9.2X10⁻⁴ M Mg²⁺,and a pipe delivers 25,000 L of this hard water per day. Whatmass (in kg) of zeolite A is needed to soften a week’s supply ofthe water? (Assume zeolite A loses its capacity to exchange ions when 85 mol % of its Na⁺ has been lost.)
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter21: Chemistry Of The Nonmetals
Section: Chapter Questions
Problem 72QAP
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Zeolite A, Na₁₂[(AlO₂)12(SiO₂)₁₂] .27HO, is used to softenwater by replacing Ca2²⁺ and Mg²⁺ with Na. Hard water froma certain source is 4.5X10⁻³ M Ca2²⁺ and 9.2X10⁻⁴ M Mg²⁺,and a pipe delivers 25,000 L of this hard water per day. Whatmass (in kg) of zeolite A is needed to soften a week’s supply ofthe water? (Assume zeolite A loses its capacity to exchange ions when 85 mol % of its Na⁺ has been lost.)
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