Changes in atmospheric pressure will alter the temperature at which water boils. How to Calculate the Boiling Point of Water. The boiling point of water will be shown as a result. We would like to show you a description here but the site won’t allow us. The answer is yes. Does hard water boil at a higher temperature than pure water or regular tap water? Water boils at 212°F at sea level, but only at sea level. I don't know at what height pretoria is but the boiling point of a fluid depends on the pressure. Three men were arrested on Saturday after pouring boiling water on a man in Mamelodi, police said. Adding salt to water produces a similar effect. The normal boiling point of water is 100 o C because this is the temperature at which the vapor pressure of water is 760 mmHg, or 1 atm. To use this calculator you will need your current pressure and elevation. The actual calculations are done on feet and inches of mercury. Under normal conditions, when the pressure of the atmosphere is approximately 760 mmHg, water boils at 100 o C. At 10,000 feet above sea level, the pressure of the atmosphere is only 526 mmHg. It should be noted that the only actual factor that is truly involved in the variance of boiling water is the pressure. The process of boiling items in water serves the same purpose. The boiling point of a liquid varies according to the applied pressure; the normal boiling point is the temperature at which the vapour pressure is equal to the standard sea-level atmospheric pressure (760 mm [29.92 inches] of mercury). Pure water freezes at 0 °C and boils at 100 °C (212 °F) under normal pressure conditions. Step 1: Find your local pressure and elevation When salt is added, the freezing point is lowered and the boiling point is raised. Hard water contains dissolved minerals, which cause boiling point elevation. What is the Boiling Point of Water? You may enter data in any of the fields and conversions will be made. The addition of salt also lowers the temperature of maximum density below that of pure water (4 °C [39.2 °F]). The more dissolved minerals in the water, the greater the effect. The line on the graph shows the normal boiling point for water. The difference in temperature usually is a degree or two. The boiling point of a liquid is the temperature at which its vapor pressure is equal to the pressure of the gas above it.The normal boiling point of a liquid is the temperature at which its vapor pressure is equal to one atmosphere (760 torr). At sea level, water boils at 100° C (212° F). However, bringing the water to a full boil kills the organisms. For example, parents are encouraged to boil baby bottles and cooks are encouraged to boil canning jars prior to first use. 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