Calculating the pH in a Titration: NaOH and HOCl Solution

Understanding pH Calculation in Acid-Base Titration

When conducting a titration between a strong base like NaOH and a weak acid like HOCl, the pH of the solution can be estimated using the concept of acidic and basic properties.

Solution Components:

- HOCl: weak acid

- NaOH: strong base

pH Calculation:

As mentioned earlier, the formula to calculate pH in a titration is pH = 14 - pOH. In this scenario, where the NaOH solution is added to the HOCl solution, the resulting pH will be determined by the interaction between the strong base and weak acid.

Why pH is likely higher than 7:

Since NaOH is a strong base, it will react with HOCl to form salts and water. This reaction will shift the pH towards the basic end of the scale. Therefore, the pH after adding NaOH to HOCl is expected to be greater than 7.

Specific pH Determination:

Without knowing the exact concentrations of the solutions, providing a precise pH value is challenging. However, if the concentration of hydroxide ions ([OH¯]) is known, the pOH can be calculated to derive the pH using the formula mentioned earlier.

Overall, in the absence of specific concentrations, the pH after adding NaOH to HOCl will be higher than 7 due to the presence of a strong base.