Hydrogen sulfide, H 2 S, is a very weak diprotic acid. In a 0.10 M solution of
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Hydrogen sulfide, H2S, is a very weak diprotic acid. In a 0.10 M solution of this acid, which of the following would you expect to find in the highest concentration?
a. H2S
b. H3O+
c. HS
d. S2
e. OH
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