a.
[tex]HNO_{3} + LiOH -> LiNO_{3}+H_{2}O\\H^{+}+NO_{3}^{-}+Li^{+}+OH^{-}-> Li^{+} + NO_{3}^{-} + H_{2}O\\H^{+}+OH^{-} --> H_{2}O[/tex]
b.
[tex]H_{2}SO_{4} + 2LiOH -> Li_{2}SO_{4}+2H_{2}O\\2H^{+}+SO_{4}^{2-}+2Li^{+}+2OH^{-}-> 2Li^{+} + SO_{4}^{2-} + 2H_{2}O\\H^{+}+OH^{-} --> H_{2}O[/tex]