What is the effect on the equilibrium when sodium formate is added to a solution of formic acid? HCOOH(aq) H⁺(aq)+ HCOO^-(aq) A)There is no change in the equilibrium. B)The equilibrium shifts to the right. C)More information is needed to answer the question. D)The equilibrium shifts to the left. E)The pH decreases.

Question

Quizplus · Accepted Answer

Sodium formate is the salt of formic acid, so it dissociates to form formate ions (HCOO-) and sodium ions (Na+). According to Le Chatelier's principle, adding more HCOO- will cause the equilibrium to shift to the left to counteract the added ion. This means there will be more undissociated formic acid (HCOOH) in solution and the equilibrium will shift away from the product side. Therefore, the answer is D, the equilibrium shifts to the left.

What Is the Effect on the Equilibrium When Sodium Formate