Answer:
[tex]BaSO_{4}[/tex] will be not soluble in water
Explanation:
LiOH is a strong base. Hence it gets completely dissociated in aqueous solution.
[tex]NaNO_{3}[/tex] is a strong electrolyte. Hence it gets completely dissociated in aqueous solution.
[tex]MgCl_{2}[/tex] is a strong electrolyte. Hence it gets completely dissociated in aqueous solution.
[tex]K_{2}S[/tex] is a strong electrolyte. Hence it gets completely dissociated in aqueous solution.
[tex]BaSO_{4}[/tex] is a sparingly soluble salt. Hence it is not dissociated and hence dissolved in water. This is due to the fact that both [tex]Ba^{2+}[/tex] and [tex]SO_{4}^{2-}[/tex] ions are similar in size. Hence crystal structure of [tex]BaSO_{4}[/tex] is quite stable. Hence [tex]BaSO_{4}[/tex] is reluctant to undergo any dissociation in aqueous solution.
