The salt that forms a neutral solution in water is

When $FeCl_3$ is dissolved in water,its solution exhibits which of the following characteristics?

Which of the following has the highest degree of hydrolysis?

Which of the following aqueous solutions will have the highest $pH$?

Which among the following salts forms a basic solution when dissolved in water?

The $K_{a}$ for $CH_{3}COOH$ is $1.8 \times 10^{-5}$ and $K_{b}$ for $NH_{4}OH$ is $1.8 \times 10^{-5}$. The $pH$ of ammonium acetate solution will be