Final answer:
To calculate the pH of the arginine hydrochloride solution, we need to determine the concentration of H⁺ ions in the solution. Arginine hydrochloride is an amino acid salt, and when it dissolves in water, it dissociates into ions. The pKa values of arginine are 1.823, 8.991, and 12.01.
Step-by-step explanation:
To calculate the pH of the arginine hydrochloride solution, we need to determine the concentration of H⁺ ions in the solution. Arginine hydrochloride is an amino acid salt, and when it dissolves in water, it dissociates into ions. The pKa values of arginine are 1.823, 8.991, and 12.01.
Since arginine hydrochloride is a salt of a weak base (arginine) and a strong acid (hydrochloric acid), we can consider it as the salt of its conjugate acid-base pair.
To calculate the pH, we will need to consider the ionization reaction of arginine and the hydrolysis of its conjugate base. We will need to compare the acidic and basic strengths of arginine to determine the dominant species in the solution. Once we have determined the dominant species, we can calculate the pH using the relevant dissociation constants.