What is the pH classification of boiler water with a pH of 11?

Boiler water with a pH of 11 is classified as alkaline. The pH scale ranges from 0 to 14, with values below 7 indicating acidity, a value of 7 being neutral, and values above 7 indicating alkalinity. A pH of 11 signifies that the water is significantly above neutral, indicating a strong basic (alkaline) condition.

In the context of boiler water, maintaining an alkaline environment is essential for preventing corrosion and scale formation. Alkaline conditions help inhibit the growth of certain corrosive agents and promote the formation of protective layers on metal surfaces, thereby extending the life of the boiler system.

This understanding is crucial for steam engineers, as they must monitor and control the pH levels in boiler water to ensure optimal performance and safety of the boiler.