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Why do water boil at a different temperature than what was expected?
Wiki User
∙ 11y ago
I would assume that by "expected" you mean at 100 °C. The boiling point of water is the point at which the vapor pressure of water vapor in equilibrium with the liquid is equal to the pressure around it - normally this would be atmospheric pressure. Three things can impact this:
1) Higher or lower atmospheric pressure. Because atmospheric pressure is lower at high altitudes, water boils at a lower temperature there. At very high altitudes, water starts to boil at temperatures that would be considered tepid.
2) Solutes in water. PURE water may boil at 100 °C and 1 atmosphere, but when you start dissolving salt, or sugar or whatever in it, the temperature required to make it boil will increase. If you need a more detailed explanation, go ahead and ask, but if you just need a simple answer just understand that anything you mix with the water will change its boiling point.
3) Deficiency of nucleation sites. This one is a bit trickier. Water can be raised above its boiling point and remain liquid if there is no surface for the bubbles to nucleate on. It will actually be in a "metastable" rather than equilibrium state. When any bubbles do manage to form, they tend to do so catastrophically - suddenly and with great energy. This is one reason why chemists add "boiling chips" to flasks as they heat them. The smooth glass of the flask doesn't provide much in the way of rough surface points where the energy can concentrate and help bubbles form. The boiling chips provide that necessary rough surface. A close analogy to this phenomena is adding sugar or salt to a glass containing a carbonated beverage. With the sudden addition of all that rough material for bubbles to nucleate on, the beverage will suddenly foam up as the speed with which the carbon dioxide bubbles can form is increased with all the increased surface area provided by the crystals.
Wiki User
∙ 11y ago
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How can you boil water at a temperature lower than 100 celsiuse?
Place the container of water in a vacuum & it should start to boil at room temperature.
How do you prepare carbon free water?
Boil the water till its boil . then it will be free from co2. ai bit dau
Why does beer boil at a lower temperature than tap water?
Beer boil at a higher temperature than tap water because contain many solutes.
The temperature required to boil water at?
100 degrees Celsius
What temperature for Fahrenheit does pure water boil?
212 F
Does drinking water boil at a lower temperature than salt water?
Yes, drinking water does boil at a lower temperature than salt water.
How can you boil water at a temperature lower than 100 celsiuse?
Place the container of water in a vacuum & it should start to boil at room temperature.
What temeperature does water boil?
Gabe temperature
What celsius temperature does water boil?
100
What temperature in customary does water boil?
212
How do you prepare carbon free water?
Boil the water till its boil . then it will be free from co2. ai bit dau
Why does beer boil at a lower temperature than tap water?
Beer boil at a higher temperature than tap water because contain many solutes.
Why does sugar water boil at a different temperature then normal water?
Sugar has a higher boiling temperature than that of water, so water with sugar dissolved into it will take more energy and raise to a higher temp before boiling.
What temperature in Fahrenheit does water boil?
212 F
On the celsiu scale at what temperature does water boil?
100°
What is the effect of the time it takes to boil 16oz of drinking water by varying the temperature of the heat source?
If you increase the temperature of the heat source, you decrease the time it takes to boil the water.
What water boils faster salt water or sugar water when temperature is controlled?
Both saltwater and sugar water will boil at the same temperature; the average boiling temperature of 100 degrees Celsius. However, the salt and sugar will evaporate at different points during heating.
