Consider the following aqueous equilibrium for a formic acid solution, HCOOH(aq) ⇄ H⁺(aq) + HCOO^-(aq).Suppose hydrogen chloride gas is dissolved in the solution.Which statement below regarding the resulting solution is FALSE? Ignore any volume changes.

Question

Quizplus · Accepted Answer

Adding hydrogen chloride gas (HCl) to the solution increases the concentration of H+ ions, leading to a decrease in pH (A is true). This increase in H+ concentration causes the equilibrium to shift to the left (C is true), which in turn decreases the concentration of HCOO- (D is true) and increases the concentration of undissociated HCOOH (B is true). The value of Ka (acid dissociation constant) does not change because it is a constant for a given temperature and does not depend on the concentrations of reactants or products in the solution (E is false).

Consider the Following Aqueous Equilibrium for a Formic Acid Solution