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212 degrees Fahrenheit or 100 Celsius, at standard pressure.

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Boiling point depends on the pressure where the water is being boiled. At sea level conditions (14.69 psia) the temperature of boiling water is 100oC. At very high elevations (on the tops of mountains) boiling water is not hot enough to boil an egg properly. In industrial boilers, the pressure on the boiling water may be several atmospheres and the temperature several hundred degrees Centigrade.

If you can lower the pressure, the water will boil at lower temperature. You can make room temperature water (72°F) degrees boil by putting it in a container and hooking up a vacuum pump. If the pump is strong enough to create a good vacuum, you will see 72 °F degree water boil. The boiling point is the hottest that water will get, so you just made 72 °F degree water boil and it doesn't get hotter then 72°F degrees.

The hottest you can get boiling water is known as the critical point. This occurs at 647 K (374 °C or 705 °F) and 22.064 MPa (3200 PSIA or 218 atm). Above that point the water and steam are indistinguishable.

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9y ago
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15y ago

212 degrees Fahrenheit 100 degrees Celsius.

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13y ago

97oC under normal temperature and pressure.

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13y ago

100 degrees Celsius.

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Q: What temperature does it take to boil water?
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