In doing research for your Geology class you learn about
Last updated: 5/16/2023
In doing research for your Geology class you learn about different factors that affect arsenic concentrations in ground water First you learn that As is only soluble in water in the inorganic forms arsenic acid H3ASO4 and arsenous acid H3ASO3 1 6 pts Draw the Lewis structure for each acid 2 3 pts Explain why arsenic acid is more soluble in water than arsenous acid at neutral pH 3 3 pts Explain why the Southwestern part of the U S which experiences very dry arid climates tends to have higher concentrations of As in groundwater Arsenous acid is formed in water from the dissolution of diarsenic trioxide The crystal structure of diarsenic trioxide can be described as a cubic crystal system 4 7 pts In this description roughly spherical As406 cages think of these cages as their own unit adopt a face centered arrangement in a cubic unit cell If the density of diarsenic trioxide is 3 7 g mL what is the length of one edge of the unit cell in 5 2 pts What is the radius of one of the roughly spherical As406 cages 6 4 pts Assuming the crystal spacing is the same as the edge length it s not quite but we ll assume it anyway at what angle would you measure the first order diffraction line for diarsenic trioxide with a Cu Ka radiation that has a wavelength of 1 54059