What does the dome shaped area in PV graph?
A point within the dome shaped area represents existence of liquid and gaseous carbon dioxide in equilibrium.
How do you read a vapor dome?
The shaded dome-like region outlines when the compound is both a mix of saturated liquid and saturated vapor. The tip of the dome marks the critical point. The area to the right of the critical point is vapor. The area to the left of the critical point is liquid.
What do the critical point represents in a saturation dome of steam?
The point at the very top of the dome is called the critical point. This point is where the saturated liquid and saturated vapor lines meet. Past this point, it is impossible for a liquid–vapor transformation to occur. Beyond this point, it is also impossible to distinguish between the liquid and vapor phases.
When boiling food is the temperature limited?
about 100° C
When boiling food the cooking temperature is limited to about 100° C (depending on elevation). Pressure cookers allow for faster cooking by increasing the boiling temperature of water using increased pressure.
Why are hydrogen and helium not liquefied at room temperature?
Because their critical temperature is lower than room temperature and gases cannot be liquefied above the critical temperature even by applying very high pressure.
What is relation between compressibility and temperature and liquefaction of gas?
Gases to liquids The critical temperature signifies the force of attraction between the molecules. The higher the critical temperature, higher is the intermolecular force of attraction and easier is the liquefaction of the gas. Gases require cooling and compression both for liquefaction.
What is the saturation line?
[‚sach·ə′rā·shən ‚līn] (petrology) The line, on a variation diagram of an igneous rock series, that represents saturation with respect to silica; rocks to the right of the line are oversaturated and those to the left, undersaturated.
What do you understand by Triple Point?
triple point. The temperature and pressure at which a substance can exist in equilibrium in the liquid, solid, and gaseous states. The triple point of pure water is at 0.01°C (273.16K, 32.01°F) and 4.58 mm (611.2Pa) of mercury and is used to calibrate thermometers. Compare critical point.
What is triple point and critical point?
The critical point and the triple point of a substance are two important combinations of temperature and pressure. The critical point of a substance lies at the endpoint of the phase equilibrium curve whereas the triple point is the point where the three equilibrium curves meet.
What happens if temperature is less than saturation temperature?
The substance is in the liquid state if the pressure is greater than the saturation pressure at the given temperature or if the temperature is less than the saturation temperature at the given pressure.
Can you cook at a lower temperature for longer?
In practical terms, you just have to live with the knowledge that making the temperature lower will make your food take longer until it is cooked. If you make it hotter, it will take shorter, but you risk reaching some unwanted temperature.
Why does food cook faster at higher temperature?
Imagine a conventional pot full of meat and water. As the pot is heated, the temperature inside increases until the water starts to boil. That means food can cook at a much higher temperature than it ever could at atmospheric pressure—and since cooking reactions speed up at higher temperatures, your food cooks faster.
Which is the plot in the volume vs temperature graph?
The plot in the volume vs temperature (in K) graph is a straight line passing through the origin. The above graph is a volume vs temperature graph plotted as a constant pressure for a fixed amount of gas.
How is the volume of a gas related to the temperature?
The plot in the volume vs temperature (in K) graph is a straight line passing through the origin. The above graph is a volume vs temperature graph plotted as a constant pressure for a fixed amount of gas. As we can observe from the graph the volume increases with an increase in the temperature, and vice versa.
How is volume related to temperature in Charles’s law?
The above graph is a volume vs temperature graph plotted as a constant pressure for a fixed amount of gas. As we can observe from the graph the volume increases with an increase in the temperature, and vice versa. Thus, volume is directly proportional to temperature at a constant pressure, which is the statement of Charles’s law.
Which is the least hypothetical temperature with zero volume?
Each line in the graph of volume Vs temperature is known as isobar (Since pressure is constant). The least hypothetical temperature of -273˚C at which a gas will have zero volume is called as absolute zero.