# Can water start to boil at 120 degree not 100 Justify your answer with example?

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No, the water is not pure. It is because, the boiling point of pure water is 100°C but the given sample boils at 102°C. It indicates that it has some dissolved impurities.

## Can water boil at 120 degrees?

High Altitude: Water boils at less than 212 degrees F. (approximately 96 degrees F.). … – The water is comparable to the temperature of the human body. Warm Water – 115 to 120 degrees F.

## What are some reasons that tap water might not boil at exactly 100 C?

Because boiling point of water is not 100 degrees Celsius but it depends on atmospheric pressure. Liquid boils at temperature when partial pressure of liquid becomes equal to atmospheric pressure. Examples: At hill station, due to low atmospheric pressure water boils at less than 100 degrees Celsius.

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## Why does water boils at 120 degree in pressure cooker explain the reason?

The boiling point of a liquid increases with an increase in pressure and vice-versa. In a pressure cooker, steam is not allowed to escape out. The vapour pressure on water inside becomes nearly 1.75 times the atmospheric pressure, so water boils at about 120oC.

## Does water start to boil at 100 degrees Celsius?

The boiling point of a liquid varies depending upon the surrounding environmental pressure. … For example, water boils at 100 °C (212 °F) at sea level, but at 93.4 °C (200.1 °F) at 1,905 metres (6,250 ft) altitude. For a given pressure, different liquids will boil at different temperatures.

## What happens to water at 120 degrees Celsius?

At normal atmospheric pressure it will heat up to 100°C then boil and when everything is vaporized the vapor will heat to 120°C. At a different pressure it will boil at a different pressure and with high enough pressure the boiling point can be above 120°C, so the water will just heat up without boiling.

## Is 120 degrees Celsius boiling point?

What happens to water at 120 degrees Celsius? … As you can see, at atmospheric pressure (101,33 kPa), water boils at 100°C. To keep it liquid at 120°C, you must increase pressure to at least 200 kPa (so around 100 kPa gauge pressure).

## Can water boil at less than 100 degrees?

It seems like one of those basic science facts: Water boils at 212 degrees Fahrenheit (100 degrees Celsius), right? Well, not always. It depends on where you’re doing the boiling. In fact, water will boil at about 202 degrees in Denver, due to the lower air pressure at such high elevations.

## At what temperature water will boil?

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). At sea level, water boils at 100° C (212° F).

## Why is it not exactly 100 degrees Celsius?

In definite terms therefore, the boiling point of water is not strictly 100°C, as it is dependent on altitude and the atmospheric pressure. The simple answer to this question is that the boiling point of water is 100 °C or 212 °F at 1 atmosphere of pressure (sea level). However, the value is not a constant.

## At what pressure does water boil at 120?

As you can see, at atmospheric pressure (101,33 kPa), water boils at 100°C. To keep it liquid at 120°C, you must increase pressure to at least 200 kPa (so around 100 kPa gauge pressure).

## Does water boil below 100c in a pressure cooker?

Inside a pressure cooker, the pressure can increase by an additional 15 psi, to almost 30 psi. … Air pressure decreases as you move higher above sea level. At lower pressures, water boils at a lower temperature. That means something simmering away is cooking below 100°C (212°F) and will take longer to cook.

## Does water boil at a lower temperature in a pressure cooker?

A pressure cooker can be used to compensate for lower atmospheric pressure at high elevations. The boiling point of water drops by approximately 1°C per every 294 metres of altitude, causing the boiling point of water to be significantly below the 100 °C (212 °F) at standard pressure.

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## Why does water not boil at 100 degrees Celsius when it is under greater than normal atmospheric pressure?

Why does water not boil at 100 ∘ C when it is under greater-than-normal atmospheric pressure? To boil, bubbles must form within the liquid, and the higher the pressure the harder it is for bubbles to form; this requires higher temperatures. … The higher temperatures cook food faster.

## What happens when water reaches 100?

Below 100 degrees C some water molecules have enough kinetic energy to escape into the air, AKA evaporation. At 100 degrees nucleate boiling occurs, a lot of molecules escape the liquid water throughout the mass of water, form bubbles, rise and escape into the air. All at standard pressure, of course.

## Why does water not boil at 100 ∘ C when it is under greater than normal atmospheric pressure?

Why doesn’t water boil at 100 ∘C when it is under higher-than-normal atmospheric pressure? The pressure holds the water vapor above the waters surface and this will inhibit boiling.

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