Which of the following aqueous solutions will be most basic?

For a weak acid with dissociation constant $K_a$ and its conjugate salt with hydrolysis constant $K_h$,which of the following represents their relationship?

How many hydroxide ions are produced by the hydrolysis of one mole of sodium carbonate $(Na_2CO_3)$?

For a $0.01 \ M$ solution of $NaOCl$,the $K_h$ value is $10^{-6}$. The degree of hydrolysis of the salt is .........$\%$.

The degree of hydrolysis of a salt of a weak acid and a weak base in its $0.1 \ M$ solution is found to be $50 \ \%$. If the molarity of the solution of the same salt is $0.5 \ M$,then the percentage degree of hydrolysis of the salt should be ......... $\%.$

The aqueous solution of $CH_3COONa$ is .......