Florida Licensed Dispenser Practice Exam 2025 – Comprehensive All-in-One Guide to Exam Success!

The latent heat of vaporization at boiling point, measured in BTU per gallon, refers to the amount of energy required to convert a unit volume of a liquid into vapor without changing its temperature. For many common substances, including water, this value is critical for understanding processes like evaporation, boiling, and refrigeration.

In this case, the correct value for the latent heat of vaporization for water is approximately 800 BTU per gallon. This number indicates the energy needed to evaporate water at its boiling point (212°F at sea level) and is essential in various applications ranging from culinary practices to industrial processes.

There are specific reasons why the other options do not correspond to the established scientific measurements for water's latent heat of vaporization at its boiling point. Understanding this value is vital for professionals in fields such as engineering, meteorology, and HVAC, where managing heat transfer and energy efficiency is paramount.