Oxygen H2SO4 making

Oxygen may be produced by electrolysis of water. In such electrolytic procedure, small amounts of H2SO4 or NaOH may be added to water. Electrolysis methods, however, are not used as much commercially as are air bquefaction processes which cost less. However, in making hydrogen from water by electrolysis, oxygen is obtained as a by-product. 

E) Reactions [13.33]-[13.39] make up the photochemical pathways for the oxidation of SO2 to H2SO4 mediated by hydroxyl radical and ozone, which are generated from the interaction of the exposure light with moisture and oxygen, respectively, in the exposure chamber. 

Based on the above qualifications, we must bind the H atoms to the O atoms, and since each O has a double connectivity, then in the case of H3PO4 in Scheme 6.4a, there remain collectively five dangling connectivities of the O atoms. Therefore, the phosphorus atom must use its five-connector state and click to form phosphoric acid. Similarly, in the H2SO4 molecule in Scheme 6.4b, after connecting the two H atoms to the O atoms, we are left with six dangling connectivities collectively on the oxygen atoms, and this makes sulfm use its six-connector state and click to form sulfiuic acid. 

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