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What determines the temperature at which a refrigerant vaporizes?
The pressure and the specific refrigerant properties determine the temperature at which a refrigerant vaporizes. As pressure increases, the boiling point of the refrigerant also increases. Different refrigerants have different boiling points at different pressures.
What is the physical state of argon at -197 and normal atmospheric pressure?
Argon will be a gas at -197°C and normal atmospheric pressure, as it has a boiling point of -185.8°C at atmospheric pressure.
Briefly describe two methods or techniques for the determination of boiling point?
Distillation - where the constant tempreature of the vapor given off when boiling the liquid at the lowest temperature possible is recorded as the boiling point. Capillary Bell - where the temperature, under pressure, that the liquid enters the bell in place of the vapor is recorded as the boiling point of the liquid.
In the Fahrenheit temperature scale what is the boiling point of water?
In atmospheric pressure (ie at sea level), water boils at 100 degrees Celsius.
Why would water boil at less than 100 degrees on top of a mountain?
The boiling point of any liquid is the temperature at which its vapor pressure becomes equal to the atmospheric pressure. So if the atmospheric pressure is lower, it will take a lower temperature to make the vapor pressure equal to that of atmospheric pressure. At hill-stations, the air is generally thinner due to the altitude and the atmospheric pressure is also lower. Here, it requires less than 100oC temperature to reach the point where the vapor pressure of water reaches that of air. So, water boils below 100oC at hill stations.
Which refrigerant has the highest boiling temperatures at atmospheric pressure?
The refrigerant plays a key role in achieving vapor cycle air ... After that, and until all the water has been evaporated, the remaining boiling liquid stays at the ... of the higher temperature of boiling resulting from increased pressure.
What is the relationship of boiling point with atmospheric pressure?
The boiling point of a substance decreases as the atmospheric pressure decreases. This is because lower atmospheric pressure reduces the pressure pushing down on the liquid, making it easier for the liquid to vaporize. Conversely, higher atmospheric pressure increases the boiling point of a substance as more pressure is needed to overcome the atmospheric pressure and cause the liquid to vaporize.
How does the boiling point different from lowland and highland?
The boiling point of a substance is lower at higher altitudes due to lower atmospheric pressure, which reduces the pressure exerted on the liquid. In contrast, at low altitudes with higher atmospheric pressure, the boiling point is higher as more pressure is needed to overcome atmospheric pressure.
What determines the temperature at which a refrigerant vaporizes?
The pressure and the specific refrigerant properties determine the temperature at which a refrigerant vaporizes. As pressure increases, the boiling point of the refrigerant also increases. Different refrigerants have different boiling points at different pressures.
What is the relationship between pressure and the boiling points of liquid?
As atmospheric pressure increase so does the boiling pont, when atmos. pressure decreases so does boiling point. A liquid boils when its vapor pressure equals atmospheric pressure.
What refrigerants has the lowest boiling temperatures at atmospheric pressure R-12 R-22 R-134a R-502?
This is R-502 with a boiling point at -45 0C.
What are the temperatures for boiling water?
The boiling point of water is 100 degree celsius
Why must the boiling point be measured at constant atmospheric pressure?
Boiling point is the temperature at which the vapor pressure of a liquid equals the atmospheric pressure. By measuring at constant atmospheric pressure, we ensure consistency in the comparison of boiling points between different substances. Changing the pressure can alter the boiling point of a substance, so maintaining a constant pressure allows for accurate and meaningful comparison of boiling points.
As external pressure such as atmospheric pressure on liquid increases its boiling temperature?
At high pressure the boiling point is higher.
Do all the liquids at their boiling points have same vapour pressure?
At the same atmospheric pressure, yes. That's kind of the definition of boiling point: when the vapor pressure is the same as the atmospheric pressure.
How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
What is the condition which occurs when the atmospheric pressure is equal to the vapour pressure?
boiling
