Consider the following reaction including the hypothetical K value. H 2 PO 4 - +H 2 OHPO 4 2- + H 3 O + K = 5.

Please help with the following acid- based equilibria questions

1.

Consider the following reaction including the hypothetical K value.

H2PO4-+H2O↔HPO42-+ H3O+K = 5.87⋅10-3

What type of compound is H2PO4-?  (Acid or base) (Weak or Strong)

2.

Consider the following reaction.

C3H6O2+H2O↔ C3H5O2-+ H3O+K = 3.57⋅10-3

What substance is behaving as the base?

What substance is the conjugate base?

3.

Consider the following steps in the dissociation of phosphoric acid.

Step 1