Which statement about Sodium Hypochlorite is true?

Sodium Hypochlorite is indeed sensitive to various environmental factors, which is why all of the statements regarding its deterioration are true. Its stability is affected significantly by exposure to sunlight, high temperatures, and air.

When Sodium Hypochlorite is exposed to sunlight, it breaks down rapidly due to photolysis, leading to a loss of its disinfecting effectiveness. This means that for storage and use, it is crucial to keep Sodium Hypochlorite in a dark place, reducing its exposure to light as much as possible.

High temperatures also contribute to its instability. When Sodium Hypochlorite is stored at elevated temperatures, it undergoes thermal degradation, which decreases its potency. This is why it is recommended to store this chemical in cool environments.

Lastly, exposure to air can lead to a reaction with carbon dioxide, which can further degrade Sodium Hypochlorite, affecting its efficacy as a sanitizer or disinfectant.

Understanding these factors is essential for proper handling, storage, and application of Sodium Hypochlorite in pool maintenance and water treatment. The cumulative effect of these conditions is why recognizing that all aspects mentioned contribute to its deterioration is crucial for effective use.