The range of 14.5 to 15.5 degrees Celsius is often used as a standard reference temperature when calculating energy changes or heat transfer in calorimetry. This range is close to room temperature and is commonly known as the "standard temperature."
The reason for using a standard temperature is to provide a consistent reference point for energy calculations. When energy is transferred to or from a substance, the temperature of the substance changes. By choosing a specific reference temperature, scientists and engineers can compare and analyze energy changes in different experiments or systems.
Using a standard temperature helps eliminate the influence of variations in ambient temperature, allowing for more accurate and comparable results. It provides a baseline for measuring the energy changes associated with chemical reactions, physical processes, or heat transfer.
While 14.5 to 15.5 degrees Celsius is a commonly used range for standard temperature, it's important to note that specific experiments or industries may use slightly different reference temperatures based on their specific requirements or conventions.