0
because in adiabatic process heat absorbed is zero. and the work is done by internal energy. so internal energy decreases.we know that temperature is directly related with internal energy
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is adiabatic cooling?
Adiabatic cooling is cooling that occurs without removing any energy from the system. It often occurs when a gas is decompressed. Adiabatic heating and cooling play an important role in weather.
The propagation of sound waves in gas involves?
Adiabatic compression & rarefaction.
In Adiabatic process how the ideal gases increases it's internal energy?
The first law of thermodynamics states that: DU = DQ + DW where DU is the increase in the internal energy of the gas DQ is the heat supplied to the system and DW is the work done ON the system For an adiabatic process, DQ = 0 Therefore, DU = DW It can be thus easily seen that for the internal to increase (DU +ve), DW must be positive, that is work has to be done on the system (in this case the ideal gas). Hence, the gas should be compressed.
What happens to the gas when temperature drops from 100 degrees to -100 degrees?
You will recall from the Ideal Gas Laws that temperature, pressure, and volume are all connected in terms of the behavior of a gas (especially an ideal gas, but actual gas resembles ideal gas to a certain extent). So, if the gas is in a container of fixed volume, then reducing the temperature will correspondingly reduce the pressure.
What is the phase change when a solid becomes a liquid?
Gases become liquids when they have less space to occupy or when the temperature is cool enough for that substance to be a liquid. Take water as an example. When the temperature is hot enough, it is steam. As the temperature cools, the molecules loose energy and begin sticking together forming liquid water. As the temperature drops farther, the water turns into a solid. The temperature at which a gas becomes solid varies by the gas. Dry ice is the solid form of carbon dioxide that is normally a gas.
How does the temperature of gas change when it is compressed if the process is adiabatic?
In an adiabatic process, the temperature is increased when it is compressed. There is an increase in internal kinetic energy, and because temperature is related to kinetic energy, it is also increased.
What is an adiabat?
An adiabatic process is a thermodynamic process, there is no gain or loss of heat.
Why does a tire feel cold when you take pressure out of it?
This is a result of something called adiabatic cooling. When a gas is decompressed, the temperature drops. A gas will also heat up when compressed.
What is an adiabotic process?
A change in pressure and volume of a gas when no heat is allowed to enter or escape from the gas is called adiabatic change . For an adiabatic change , the exchange of heat between the gas and the surroundings must be preserved. So the walls of container must be perfectly non conducting.
What happens when adiabatic expansion of gas molecules occurs?
The temperature of the gas decrease.
Given 1 mole of an ideal gas at 100 Kelvin what would the temperature be after compressing the gas to one-half its original volume therefore doubling the pressure?
Use the combined gas law --- it shows that for those conditions the temp must remain 100K (In an isotropic process.) How about in an adiabatic process? I can't seem to find an equation that solves an adiabatic process without information unknown in the scenario.
What are 2 ways the temperature of gas increases?
(Adiabatic) compression and simply heating up.
Why does gas inside a cylinder cool when subjected to adiabatic expansion?
because while cooling of gas in adiabatic expansion process , as it is a reversible procces the heat is lost while reversible work
Derivation for workdone in isothermal process?
In thermodynamics, an adiabatic process or an isocaloric process is a process in which no heat is transferred to or from working fluid. The term "adiabatic" literally means an absence of heat transfer; for example, an adiabatic boundary is a boundary that is impermeable to heat transfer and the system is said to be adiabatically (or thermally) insulated. An insulated wall approximates an adiabatic boundary. Another example is the adiabatic flame temperature, which is the temperature that would be achieved by a flame in the absence of heat loss to the surroundings. An adiabatic process which is also reversible is called an isotropic process.Ideal gas:For a simple substance, during an adiabatic process in which the volume increases, the internal energy of the working substance must necessarily decrease. The mathematical equation for an ideal fluid undergoing an adiabatic process is,p.v^( γ )where P is pressure, V is volume, andγ =CP/CV=α +1 / α .CP being the molar specific heat for constant pressure and CV being the molar specific heat for constant volume. α comes from the number of degrees of freedom divided by 2 (3/2 for monotonic gas, 5/2 for diatomic gas). For a monotonic ideal gas, γ = 5 / 3, and for a diatomic gas (such as nitrogen and oxygen, the main components of air) γ = 7 / 5. Note that the above formula is only applicable to classical ideal gases and not Bose-Einstein or Fermi gases.For the derivation of work done in an adiabatic process, please visit the link I added below.
Is isothermal expansion reversible under ideal conditions?
No. All processes involving heat transfer are not reversible, since they result in an increase in entropy. Isothermal expansion implies heat transfer to maintain the system at a constant temperature. Normally an expanding gas would cool if there were no heat entering the system. Adiabatic processes involve no heat transfer and are reversible. The temperature can (and usually does) change during an adiabatic process.
What occurs when the temperature of a saturated gas drops to its dew point?
it condenses
When a gas expands to a region of low pressure what happen to its temperature?
The temperature drops. When a real (non ideal) gas expands ( in such a way that it does not take in heat from the environment- so called adiabatic) for example when hot air rises into a low pressure region the gas will cools. Real gases when they expand freely cool, this is the basis of the refrigerator (Joule Thomson effect). The explanation is that the separation of gas molecules involves "work" done against intermolecular forces which leads to a reductio in the kinetic of the molecules, hence the observed temperature.
