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The products separate into two aqueous layers, with the sulfuric acid floating on top, and a mixture of hydrogen iodide and unreacted iodine on the bottom. [1] While the two layers are generally considered immiscible , small amounts of sulfuric acid may still remain in the hydrogen iodide layer and vice versa.
As a η 1-SO 2 (S-bonded planar) ligand sulfur dioxide functions as a Lewis base using the lone pair on S. SO 2 functions as a Lewis acids in its η 1-SO 2 (S-bonded pyramidal) bonding mode with metals and in its 1:1 adducts with Lewis bases such as dimethylacetamide and trimethyl amine.
Sulfurous acid is commonly known to not exist in its free state, and due to this, it is stated in textbooks that it cannot be isolated in the water-free form. [4] However, the molecule has been detected in the gas phase in 1988 by the dissociative ionization of diethyl sulfite. [5]
SO2, a staff officer of the second class, often a commissioned officer of lieutenant commander, major or squadron leader rank SO2, a London Metropolitan Police Specialist Operations command division Special Operations 2 – Operational, of the British, World War II Special Operations Executive