Final answer:
We are given the titration of triethylamine (CH₃CH₂)3N with HCl solution. We need to calculate the pH at different volumes of titrant added. To calculate the pH, we consider the initial concentration of triethylamine and the amount of HCl added. Using the equilibrium expression for the reaction, we can determine the concentrations and calculate the pH.
Step-by-step explanation:
In this question, we are given the information about the titration of triethylamine, (CH₃CH₂)3N, with HCl solution. The concentration of triethylamine is 0.1000 M and the Kb value for triethylamine is 5.2 × 10^-4. We need to calculate the pH at different volumes of titrant added.
Triethylamine is a weak base and HCl is a strong acid. The reaction between triethylamine and HCl will form a salt, (CH₃CH₂)3NH⁺Cl⁻, and water. To calculate the pH, we need to consider the initial concentration of triethylamine and the amount of HCl added.
At the beginning of the titration, before any HCl is added, the solution will have a pH determined by the Kb of triethylamine. As HCl is added, it will react with triethylamine to form the salt and water, and the pH will change. To find the pH at each stage of the titration, we need to calculate the concentrations of triethylamine and the salt. Using the equilibrium expression for the reaction, we can determine the concentrations and calculate the pH.