Jacob N. answered 06/14/21
25 years of experience teaching high school chemistry!
Good morning, Maria.
To begin, we can easily state that the strong acid, HCl, is the most acidic. WE can also state that the strong base, LiOH, is the most basic.
The other three are solutions of salts.
CaBr2 is a neutral salt because its parent base, Ca(OH)2, is a strong parent base, while the parent acid, HBr, is also strong.
AlCl3 is an acidc salt because the parent base, Al(OH)3, is a weak parent base, while the parent acid, HCl, is strong.
Mg(ClO)2 is a basic salt because the parent base, Mg(OH)2, is a strong parent base while the parent acid, HClO, is a weak acid.
Ranking from most acidic on the left to most basic on the right:
HCl, AlCl3, CaBr2, Mg(ClO)2, LiOH