Question

How $LiNO_{3}$ and $NaNO_{3}$ differ from each other on the action of water?

Answer 1

i) Lithium nitrate reacts with water it dissociates to form Lithium ion and nitrate ion with the liberation of hydrogen

LiNO$_{3}$(aq) + H$_{2}$O(l) ---------> Li$^{-}$(aq) + NO$_{2}^{-}$(aq)

ii) When sodium nitrate (NaNO$_{3}$) is dissolved in water, the resulting solution is neutral.  

NaNO$_{3}$ = Na$^{+}$ + NO$_{3}^{-}$

NO$_{3}^{-}$ is the conjugate base of the strong acid HNO$_{3}$ will not react with water so the resulting solution is neutral