Answer:
A. The equilibrium constant for the reaction will stay the same.
B. The concentration of HB⁺(aq) will increase.
Explanation:
For the equilibrium:
B(aq) + H₂O(l) ⇌ HB(aq) + OH⁻(aq)
The equilibrium constant is:
K = [HB] [OH⁻] / [B]
A. The increase of B concentration will produce HB and OH⁻ in order to maintain the equilibrium constant for the reaction constant.
B. By LeChatelier's principle. An increase in the concentration of a reactant will result in predictable and opposing changes in the system that are the production of more HB(aq) and OH⁻(aq). Thus, the concentration of HB⁺(aq) will increase.
I hope it helps!