Under standard atmospheric conditions for water to boil at 212°F, which statement is correct?

Under standard atmospheric conditions for water to boil at 212°F, which statement is correct?

• A. 14.696 psi at 100°F
• B. 2 psi at 70°F
• C. 10 psi at 60°F
• D. 14.696 psi at 70°F

Answer: (D)

Standard atmospheric pressure at sea level is 14.696 psi, and at that pressure water boils at 212°F. The statement that lists 14.696 psi is correct because it reflects the defined value of standard atmosphere. The accompanying temperature (70°F) doesn’t change the pressure needed for boiling; it’s the pressure that determines the boiling point, which is 212°F under those standard conditions. The other options use different pressures or pair the standard pressure with a non-boiling temperature, so they don’t match the standard-atmosphere scenario.

Standard atmospheric pressure at sea level is 14.696 psi, and at that pressure water boils at 212°F. The statement that lists 14.696 psi is correct because it reflects the defined value of standard atmosphere. The accompanying temperature (70°F) doesn’t change the pressure needed for boiling; it’s the pressure that determines the boiling point, which is 212°F under those standard conditions. The other options use different pressures or pair the standard pressure with a non-boiling temperature, so they don’t match the standard-atmosphere scenario.