Yes, it is true.
It will raise the boiling point. This why, for example, car radiators have a pressure cap. This causes a rise in the boiling point of the water and it is less likely to boil.
raise its freezing point
Do you mean how can you boil at different temperatures? You can add lots of salt to the boiling water to raise the temperature. This isn't very effective. The best method is to pressurize the pot (pressure cooker) this will raise the temperature quite a bit, up to 250 degrees at the highest pressure allowed by a pressure cooker. Do you mean what are the different temperature scales and boiling points? water boils at 212 degrees F or 100 degrees C
Pressure Cookers raise the boiling point of water. As pressure increases on a liquid, so does the boiling point. This is due to the fact that a liquid will not boil until the vapor pressure of the liquid is equals the environmental pressure surrounding the liquid. Think of it essentially as the surrounding pressure holds the substance in liquid form until it has enough energy to escape into gas form.
waters boiling point is 100 degree celcius
It will raise the boiling point. This why, for example, car radiators have a pressure cap. This causes a rise in the boiling point of the water and it is less likely to boil.
If you want and if it is possible by an increase of pressure.
raise its freezing point
the boiling point of the water will raise 3 deg. frht. for every pound of pressure the cap is rated for. a 10lb. cap will raise the boiling temp to 242deg. frht.
Do you mean how can you boil at different temperatures? You can add lots of salt to the boiling water to raise the temperature. This isn't very effective. The best method is to pressurize the pot (pressure cooker) this will raise the temperature quite a bit, up to 250 degrees at the highest pressure allowed by a pressure cooker. Do you mean what are the different temperature scales and boiling points? water boils at 212 degrees F or 100 degrees C
No, the boiling point of the pure water remain constant at 100 0C, of course at standard pressure.
Yes, by increasing the pressure you raise the boiling point.
Pressure Cookers raise the boiling point of water. As pressure increases on a liquid, so does the boiling point. This is due to the fact that a liquid will not boil until the vapor pressure of the liquid is equals the environmental pressure surrounding the liquid. Think of it essentially as the surrounding pressure holds the substance in liquid form until it has enough energy to escape into gas form.
salt or sugar would lower the melting point and raise the boiling point. The salt or sugar would reduce the partial pressure of water in the solution (essentially more competition), effectively raising the boiling point.
waters boiling point is 100 degree celcius
Because it's very very hot. OR Is the correct temperature and has not enough pressure upon it to raise it's boiling point. Water's boiling point increases 3 degrees per pound of pressure upon it.
Water at ambient atmospheric pressure boils at 100C. One way of raising the boiling point is to raise the surrounding pressure. If you raise the pressure surrounding the water to about 93 psi above atmospheric, it will boil at about 170C. Do not try this at home! Boiling water at this pressure is extremely dangerous and can severely burn you.