$A$ solution of sodium acetate in water will

Which of the following salts when dissolved in water will get hydrolysed?

The aqueous solution of sodium acetate is:

Assertion : $A$ solution of $FeCl_3$ in water produces brown precipitate on standing.
Reason : Hydrolysis of $FeCl_3$ takes place in water.

The aqueous solution of aluminium chloride $(AlCl_3)$ is acidic due to:

Ammonium acetate which is $0.01 \ M$,is hydrolysed to $0.001 \ M$ concentration. Calculate the change in $pH$ in $0.001 \ M$ solution,if initially $pH = pK_a$.