Write the conjugate base of the following: $HF, CH_{3}NH_{3}^{+}, H_{3}PO_{4}, HPO_{4}^{2-}$
(N/A) The conjugate base is formed by removing a proton $(H^{+})$ from the acid.
$HF - H^{+} \rightarrow F^{-}$
$CH_{3}NH_{3}^{+} - H^{+} \rightarrow CH_{3}NH_{2}$
$H_{3}PO_{4} - H^{+} \rightarrow H_{2}PO_{4}^{-}$
$HPO_{4}^{2-} - H^{+} \rightarrow PO_{4}^{3-}$
$HF - H^{+} \rightarrow F^{-}$
$CH_{3}NH_{3}^{+} - H^{+} \rightarrow CH_{3}NH_{2}$
$H_{3}PO_{4} - H^{+} \rightarrow H_{2}PO_{4}^{-}$
$HPO_{4}^{2-} - H^{+} \rightarrow PO_{4}^{3-}$
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