Direct Measurements of Covalently Bonded Sulfuric Anhydrides from Gas-Phase Reactions of SO3 with Acids under Ambient Conditions
Avinash Kumar,
Siddharth Iyer,
Shawon Barua
et al.
Abstract:Sulfur trioxide (SO3) is an important oxide
of sulfur
and a key intermediate in the formation of sulfuric acid (H2SO4, SA) in the Earth’s atmosphere. This conversion
to SA occurs rapidly due to the reaction of SO3 with a
water dimer. However, gas-phase SO3 has been measured directly
at concentrations that are comparable to that of SA under polluted
mega-city conditions, indicating gaps in our current understanding
of the sources and fates of SO3. Its reaction with atmospheric
acids could be one such fate that … Show more
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