At a pressure of 300 kPa, what is the boiling temperature of water?

The correct answer is 134°C. The boiling point of water changes with pressure, a principle governed by the relationship described by the Clausius-Clapeyron equation. At standard atmospheric pressure (101.3 kPa), water boils at 100°C. However, at higher pressures, the boiling point increases.

At 300 kPa, which is significantly higher than standard atmospheric pressure, water boils at a temperature higher than 100°C. Table or charts that list the boiling point of water at various pressures show that at 300 kPa, the boiling point is approximately 134°C. This elevated boiling point occurs because the added pressure forces the molecules to require more thermal energy to enter the gaseous state, thus raising the temperature at which boiling occurs.

Understanding the correlation between pressure and boiling point is crucial for refrigeration operators, as it directly impacts system operations and efficiencies when boiling refrigerants or water in various equipment setups.