1. What is the conjugate base for [tex]\mathrm{HNO}_2[/tex] ?
A. [tex]\mathrm{HNO}_3[/tex]
B. [tex]\mathrm{H}_2 \mathrm{NO}_2[/tex]
C. [tex]\mathrm{NO}_2{ }^{-}[/tex]
D. [tex]\mathrm{NO}^{-2}[/tex]



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