What is the boiling point of water in kelvin at standard atmospheric pressure?

• A. 298 K
• B. 373 K
• C. 273 K
• D. 212 K

Answer: (B)

Verified step by step guidance

1. Understand that the boiling point of a substance is the temperature at which its vapor pressure equals the external pressure, causing it to change from liquid to gas.
2. Recognize that the standard atmospheric pressure is 1 atm (or 101.3 kPa), which is the pressure at sea level.
3. Recall that the boiling point of water at 1 atm pressure is commonly known to be 100 degrees Celsius.
4. Convert the boiling point from Celsius to Kelvin using the formula: \(T(K) = T(^\circ C) + 273.15\).
5. Apply the conversion to find the boiling point of water in Kelvin: \$100 + 273.15 = 373.15$ K (approximately 373 K).