Answer
a. $HBrO_2$ is an acid.
b. $CsOH$ is a base.
c. $Mg(NO_3)_2$ is a salt.
d. $HClO_4$ is an acid.
Work Step by Step
1. Divide the compound in ions.
a: $H^+$ and $BrO{_2}^-$
b. $Cs^+$ and $OH^-$
c. $Mg^{2+}$ and $NO{_3}^-$
d. $H^+$ and $ClO{_4}^-$
2.
If there is a $H^+$ in it, the compound is an acid.
If there is a $OH^-$ in it, the compound is a base.
If it does not have $H^+$ and $OH^-$, it is a salt.
