Where will water boil at a low temperature?

Water will boil anywhere, but it boils at different temperature in different places. For example, it will boil at a lower temperature up a mountain than at sea level.

      The boiling point of water is the temperature at which its vapour pressure becomes equal to the outside atmospheric pressure.

     As the atmospheric pressure is always changing so the boiling point of water will vary from day to day. Water boils at 1000 C only when the atmospheric pressure outside is at the “standard” value.

    At Quito in Ecuador, this is about 2,700 metres (or 8,800 feet) above sea level, water boils at about 900 C.

    People who explore in mountainous regions find a pressure cooker very useful. The time required to cook food can be greatly reduced if the boiling point of the water is raised. The pressure cooker does this, since it is an aluminum container fitted with a loaded pin valve which allows steam to escape. The valve can be set at varying pressures, enabling the food to be cooked at a temperature of about 1200 C.

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