Be sure to answer all parts.

The following aqueous species constitute two conjugate acid$-$base pairs: $N{O}_3^{-},F,H{F}^{-}HN{O}_3.$

You do not need to include'states of matter in your answers below.

Use all four of them to write an acid$-$base reaction with $K_c>1$

$K_c>1$:

Use all four of them to write another acid$-$base reaction with $K_c<mn\; id="EditorElement\_16446265">1</mn>$ :

$K_c<mn\; id="EditorElement\_16446232">1</mn>$: