can water reach higher temperatures than 100% c?

Answer 1

Yes, but not at standard atmospheric pressure.

100 degrees Celcius is the temperature at which pure water boils at 1 atmosphere of pressure. At lower pressure it will boil at a lower temperature, and at higher pressures it will take a higher temperature to boil.

This is the basis of pressure cookers. By increasing the pressure inside the cooker, water can be superheated.

This is also the reason why many recipies have special instructions for cooking at high altitudes because you can't get water to 100 degress Celcius.

Hope this helps!

Answer 2

Yes, provided that the pressure is greater than 1 atmosphere, 760 torr, 760 mmHg. In a pressure cooker, people cook foods faster because the water gets hotter. However, there is a critical temperature of about 350degC above which water exists only as steam and cannot be compressed/condensed to liquid no matter what the pressure.

Answer 3

Yes.

For example, if you increase the pressure on the water to about 600 psig, its boiling point is about 486 °F. This is superheated water (and the steam evolved is saturated at the same temperature and pressure).

The higher the pressure, the higher the boiling point.

By placing water under a very high vacuum, water can be made to boil and freeze at the same time.

(Who's gone mad with all the 'Thumbs down' - do you know better ?)

Answer 4

As the other two answers mentioned water can reach higher temperatures in other forms than liquid and at higher pressure (this is how a pressure cooker works) but also pure water is different than solutions. Tap water is not pure, neither is water in the environment. Depending on the solution water can reach higher temps, which is why salt makes your spaghetti so nice.

Answer 5

Yes!!!
It is known that when the air pressure is lower then water boils at a lower temperature.
So when the pressure over water is increased to greater than atmospheric pressure it will boil at a higher temperature than 100 degrees.
So depending on the pressure water can exist as a liquid at values greater than 100 degrees.

Answer 6

Yes, as steam. As mw notes below, steam is just another phase of water like liquid water and ice.

But if you're actually asking can liquid water exist at temperatures over 100C, the answer is still yes. At higher pressures the boiling point can be elevated. At 500 kPa (5 times standard pressure), the boiling point of water is about 164C.

Whoever gave me a thumbs down is an idiot.

Answer 7

Theoretically you can continue to heat steam, water vapour, to higher temperatures than 100C even at normal atmospheric pressure by containing it in a container vented to the atmosphere.

Answer 8

YES,
the temperature in which water boils has to do with the amount of pressure in the system. so when we autoclave things, the temp gets up to ~130 degrees C because the system is under high pressure. Alternatively, if you put water in a closed system at room temp and greatly decrease the pressure, it will boil.

Answer 9

Yes it can. But the water must be contained in a pressure vessle.

That is why grandmother cooked with a pressure cooker, to get the water hotter and add steam pressure to cooking.

Answer 10

I assume you mean 100°C not 100%C

yes it can.

water can exist in solid, liquid, and gaseous phases. Water changes from liquid to vapor at 100°C (at STP) but it can certainly be heated to higher temperatures in the vapor phase.

For all of you who think water = liquid. stop thinking that!!!

water = H2O. boiling water does not break those bonds. Nor does freezing it. It is still H2O

Update:

I can't believe one of you guys gave me a thumbs down. Do you really think boiling water makes it not water anymore? pay attention is your chemistry class!. Water is the molecule H2O not the liquid you drink.