What change will be caused by addition of a small amount of HCl to a solution containing fluoride ions and hydrogen fluoride?
A)The concentration of hydronium ions will increase significantly.
B)The concentration of fluoride ions will increase as will the concentration of hydronium ions.
C)The concentration of hydrogen fluoride will decrease and the concentration of fluoride ions will increase.
D)The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase.
E)The fluoride ions will precipitate out of solution as its acid salt.

Question

Quizplus · Accepted Answer

Adding a small amount of HCl to a solution containing fluoride ions and hydrogen fluoride will increase the concentration of hydronium ions (H3O+), which shifts the equilibrium of the reaction HF ⇌ H+ + F- to the left, according to Le Chatelier's principle. This results in an increase in the concentration of hydrogen fluoride (HF) and a decrease in the concentration of fluoride ions (F-).

What Change Will Be Caused by Addition of a Small