# Which of the following undergoes aqueous decomposition?

## $K N {O}_{3}$, $N a C l$, ${K}_{2} S {O}_{4}$, $C {H}_{3} C O O N a$

i.e. $K N {O}_{3} \left(s\right) \stackrel{{H}_{2} O}{r} i g h t \le f t h a r p \infty n s {K}^{+} + N {O}_{3}^{-}$
${H}_{3} C - C {O}_{2}^{-} + {H}_{2} O \left(l\right) r i g h t \le f t h a r p \infty n s {H}_{3} C - C {O}_{2} H \left(a q\right) + H {O}^{-}$