Boiling Point of Water in Kelvin Scale is

The correct answer is 373.15.

Key Points

• The boiling point of water in the Kelvin scale is 373.15 K, which is equivalent to 100°C in the Celsius scale.
• This value is determined under standard atmospheric pressure, which is defined as 1 atmosphere or 101.325 kPa.
• The Kelvin scale is an absolute temperature scale where 0 K represents absolute zero, the point at which molecular motion ceases.
• Conversion between Celsius and Kelvin is straightforward: K = °C + 273.15.
• The boiling point of water is a fundamental constant widely used in scientific calculations and experiments.

Additional Information

• Kelvin Scale
  • The Kelvin scale is the SI unit of temperature measurement.
  • It starts at absolute zero (0 K), the theoretical temperature where all thermal motion stops.
  • Unlike the Celsius scale, the Kelvin scale does not use negative values.
• Boiling Point
  • The boiling point of a liquid is the temperature at which its vapor pressure equals the external pressure.
  • At high altitudes, where atmospheric pressure is lower, water boils at a temperature below 373.15 K.
• Absolute Zero
  • Absolute zero is the lowest theoretically possible temperature, equivalent to 0 K or -273.15°C.
  • At this point, the entropy of a perfect crystal is zero according to the third law of thermodynamics.
• Temperature Conversion Formulas
  • Kelvin to Celsius: °C = K - 273.15.
  • Celsius to Kelvin: K = °C + 273.15.
  • Celsius to Fahrenheit: °F = (°C × 9/5) + 32.