Select from the response list the compound or ion that best fits the description: conjugate base of H₃PO₄. A) H₃PO₄ B) H₂PO₄^- C) HPO₄²^- D) PO₄³^-

Question

Quizplus · Accepted Answer

The conjugate base of an acid is formed by removing a proton from the acid. In this case, the acid is HS1U1B13S1U1B0POS1U1B14S1U1B0, so the conjugate base would be formed by removing a proton (H+) from it. The resulting species would have a negative charge, indicating that it gained an electron. The only choice with a negative charge is B, which has a sulfide ion (S1S1P0) as well as a phosphate ion (S1U1P1-S1S1P0), indicating that it gained an electron and has negative charge.

Select from the Response List the Compound or Ion That