The concentration of arsenic in an insecticide can be determined gravimetrically through its precipitation as MgNH4AsO4. After the formation of the precipitate, it must be ignited for total conversion to Mg2As2O7, which is then cooled and weighed. Considering that a sample of 1,627 g of the insecticide produced 106.5 mg of Mg2As2O7, determine the% (m/m) As2O3 in the insecticide.Given the molar masses: Mg2As2O7 = 310.447 g / mol and As2O3 = 197.841 g / mol

Mass% of As2O3 in the insecticide is to be calculated. Molar mass of Mg2As2O7 and As2O3 is given.…

Answered: The concentration of arsenic in an…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 14.97QE: According to the Resource Conservation and Recovery Act (RCRA), waste material is classified as...

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The concentration of arsenic in an insecticide can be determined gravimetrically through its precipitation as MgNH₄AsO₄. After the formation of the precipitate, it must be ignited for total conversion to Mg₂As₂O₇, which is then cooled and weighed. Considering that a sample of 1,627 g of the insecticide produced 106.5 mg of Mg₂As₂O₇, determine the% (m/m) As₂O₃ in the insecticide.

Given the molar masses: Mg₂As₂O₇ = 310.447 g / mol and As₂O₃ = 197.841 g / mol

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