Conjugate Base

Correct Answer: B. SO4^2-

The conjugate base, according to Bronsted-Lowry’s definitions, is the compound that results when a H⁺ has been donated to the solution. If HSO4^– is the acid, then it will donate a H+ to form SO4^2-, which would be the conjugate base. It is important to note that the conjugate base would have a -2 charge since it is losing an proton (H⁺) leaving behind a -1 charge. This -1 charge can be added to the already existing -1 charge in the HSO4^– to make the total -2 charge.

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