An isothremal process is one in which the temperature is constant. heat can be gained or lost in order to maintain a constant tempereature.
An adiabatic process is one in which there is no heat exchange between a system and its surroundings. It does not matter whether the temperature of the system is constant or not.
In an isothermal process, the internal energy of a system remains constant because the temperature does not change. This means that the relationship between internal energy and temperature is that they are directly proportional in an isothermal process.
During an isothermal expansion, the work done is equal to the change in internal energy of the system.
In an adiabatic process, the work done is equal to the change in internal energy of a system.
The relationship between the adiabatic constant pressure, temperature, and volume of a system is described by the ideal gas law. When pressure is constant in an adiabatic process, the temperature and volume of the system are inversely proportional. This means that as the temperature of the system increases, the volume of the system will also increase, and vice versa.
During reversible adiabatic expansion, the work done by the system is equal to the change in internal energy.
The Carnot cycle consists of four key processes: isothermal expansion, isothermal compression, adiabatic expansion, and adiabatic compression. In the isothermal expansion phase, the working substance absorbs heat from a hot reservoir while expanding, doing work on the surroundings. During isothermal compression, it releases heat to a cold reservoir while being compressed. The adiabatic processes involve the working substance expanding and compressing without heat exchange, allowing the temperature to change due to work done on or by the system.
"Adiabatic process" refers to processes that take place in a closed system with no heat interaction with it's surroundings. "Isentropic process" refers to processes that take place in a closed system with no heat interaction with the surroundings (adiabatic process) and internally reversible. This is, no internal generation of entropy, entropy stays constant, which is what is meant by "isentropic". We can also say, an isentropic process is one where entropy stays constant, and no heat interaction of the system with the surroundings takes place (adiabatic process). Or, an adiabatic process can be irreversible, or reversible (isentropic).
An adiabatic curve is steeper than an isothermal curve because it represents a process where no heat is exchanged with the surroundings, leading to a more significant change in pressure and temperature for a given volume change. In contrast, an isothermal process occurs at constant temperature, so the system can absorb heat to maintain that temperature, resulting in a more gradual slope on a pressure-volume diagram. Essentially, the lack of heat exchange in an adiabatic process restricts the system's ability to adjust temperature, causing a steeper relationship between pressure and volume changes.
The graph differs in isothermal and adiabatic processes primarily due to the way heat exchange and temperature change are managed. In an isothermal process, the temperature remains constant as the system absorbs or releases heat, resulting in a hyperbolic curve on a pressure-volume (PV) graph. Conversely, in an adiabatic process, there is no heat exchange with the surroundings, leading to a steeper curve as the internal energy changes, causing temperature to vary. This difference in heat transfer results in distinct shapes and slopes of the curves in PV diagrams.
Reason being vaguely adiabatic process is more rapid - process is done so fast that no energy is allowed to enter or exit the system. So P-v variations will be high
No, it isn't. This is because the first law relation Q - W = ΔU reduces to W = 0 in this case since the system is adiabatic (Q = 0) and ΔU = 0 for the isothermal processes of ideal gases. Therefore, this adiabatic system cannot receive any net work at constant temperature.
An isothermal process is one which does not take in or give off heat; it is perfectly insulated. Iso = same, thermal = heat. In real life there are very few isothermal processes. Heat loss accounts for most process inefficiencies.
In an isothermal process, the internal energy of a system remains constant because the temperature does not change. This means that the relationship between internal energy and temperature is that they are directly proportional in an isothermal process.
During an isothermal expansion, the work done is equal to the change in internal energy of the system.
In an adiabatic process, the work done is equal to the change in internal energy of a system.
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.
The relationship between the adiabatic constant pressure, temperature, and volume of a system is described by the ideal gas law. When pressure is constant in an adiabatic process, the temperature and volume of the system are inversely proportional. This means that as the temperature of the system increases, the volume of the system will also increase, and vice versa.