Answer
$A$ and $H$ are the correct letters.
Work Step by Step
1. Identify all the salts:
They are $A : K_2CO_3$ and $H: NaNO_2$.
2. Now, determine if they are acids or basics:
$K_2CO_3:$
$K^+$: Insignificant acidity.
$C{O_3}^{2-}$: Weak base.
- $C{O_3}^{2-}$ is the stronger electrolyte, so, this salt is basic.
$NaNO_2:$
$Na^+$: Insignificant acidity;
$N{O_2}^-$: Weak base;
- $N{O_2}^-$ is the stronger electrolyte, so, this salt is basic too.
