Final answer:
To calculate the pH of the solution resulting from the addition of 11 mL of 1.0 M NaOH to 45 mL of 1.0 M NH₄Cl, we can use the reaction between NH₄⁺ and OH⁻ to calculate the change in concentration of NH₄⁺ and NH₃ and determine the pH of the solution.
Step-by-step explanation:
To calculate the pH of the solution resulting from the addition of 11 mL of 1.0 M NaOH to 45 mL of 1.0 M NH₄Cl, we need to consider the reaction between NaOH and NH₄Cl. NaOH is a strong base, while NH₄Cl is a salt of a weak base (NH₄⁺) and a strong acid (Cl⁻). The reaction that occurs is:
NH₄⁺ + OH⁻ → NH₃ + H₂O
This reaction produces ammonia (NH₃) and water (H₂O). The NH₄⁺ ion reacts with the OH⁻ ion to form NH₃ and water. As a result, the concentration of NH₃ increases and the concentration of NH₄⁺ decreases.
Using the equation above, we can calculate the change in concentration of NH₄⁺ and NH₃ and use it to determine the pH of the solution.