The HSO4 compound has a sulfur oxidation state of 6.
Selenium (Se) element and hydrogen sulfate (HSO4) ion are produced when sulfur dioxide (SO2) interacts with selenous acid (H2SeO3). The following describes the skeletal reaction that creates selenium from SO2 and H2SeO3 in the presence of acid:
SO2+ H2SeO3 Se + HSO4
To determine the oxidizing and reducing agents in the aforementioned process, give the oxidation number to each and every species that participated in it.
H2SeO3-----> SO2+ Se + HSO4 +4-2 +1+4-2 0 +1+6-2 While the reduction process involves a decrease in oxidation number, oxidation number increases during the oxidation process. Sulfur dioxide is considered to undergo oxidation because the sulfur oxidation number rises from +4 to +6.
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