Which of the following is NOT a variable that affects the degradation of HOCL?

The correct response indicates that salinity is not a variable that significantly affects the degradation of hypochlorous acid (HOCl). HOCl is known for its stability in various conditions, and the primary factors influencing its degradation include concentration, temperature, and pH.

Concentration plays a crucial role in determining the effectiveness and stability of HOCl; higher concentrations can enhance its reactivity. Temperature affects chemical reactions, including the degradation of compounds, where increased temperatures can accelerate decomposition processes. pH is another critical factor since HOCl is a weak acid and its form can change depending on the pH of the surrounding solution, impacting its disinfecting properties.

Salinity, while it can influence various chemical processes in aquatic environments, does not have a direct and significant impact on the degradation rates of HOCl. Therefore, salinity is less relevant compared to the other variables listed, making it the correct choice for this question.