As an acid mixes in water:

Question

Quizplus · Accepted Answer

When an acid mixes in water, it leads to the increase in hydrogen ions concentration, and the pH of the solution decreases. This happens because the acid molecule donates a proton (hydrogen ion) to the water molecule, forming hydronium ions (H3O+). Therefore, the correct choice is B. Option A is incorrect because hydroxide ions (OH-) come from the dissociation of bases, not acids. Option C is incorrect because the pH of the solution changes based on the concentration of hydrogen ions, and most acids have pH values below 7. Option D is incorrect because buffering can occur when a weak acid or a weak base is present in a solution, and it resists changes in pH when small amounts of acid or base are added. However, the mixing of an acid in water does not necessarily result in the formation of a buffer solution.

As an Acid Mixes in Water