Carrie is conducting an experiment on a solution. The solution's initial pH is 3.2. Then, as Carrie gradually adds Compound X into the solution, the pH increases to 9.8. Which is the most likely identity of Compound X? a strong acid, such as hydrochloric acid (HCl), a strong base, such as sodium hydroxide (NaOH), a salt, such as sodium chloride (NaCl), a solvent, such as water (H2O).