How hot does water need to be to boil?

Answer 1

On the Celsius scale and at Sea level, water boils at 100 degrees.

While it is boiling the temperature of the water remaining in the container will stay at 100 degrees no matter how hot you make the fire.

Answer 2

This is a broad question with many answers, depending on the conditions.

Technically water has almost no upper limit on temperature because steam is still water. Steam can reach thousands of degrees and supplies the force needed to spin turbines in electrical power plants. The heat is supplied from solar, geothermal, fossil fuels, and nuclear sources.

Water can remain in liquid form if it is put under pressure as it is heated. The cooling system in your car is capable of pushing water past its boiling point by keeping the liquid contained. Opening the radiator cap before the engine is cool would release the pressure, resulting in the water instantly boiling to steam. The antifreeze added to the water chemically increases its boiling point too.

Under STP conditions (standard temperature and pressure: 1 atmosphere of pressure and 0 Celsius) water will boil at 100 Celsius (212 F). If you reduce the air pressure, as on a mountain top, water will boil below 100 C. Some food products have instructions on their label for high-altitude preparation.

Answer:

Many substances have a critcal combination of temperature and pressure where differences between phases (liquid, gas) no longer exist. For water this is 373.9oC and 22 060 kPa

Answer 3

100 degrees Celsius then it turns to gas -Provided that the pressure is normal atmospheric pressure(1 Atmosphere).

Answer 4

100 degree celsius

Answer 5

1200 degrees C

Answer 6

it has to be 100 C