cos(e) said:do we use delta H= n*Cp* delta T even when the pressure is not constant?
cos(e) said:What do u mean by reversible process, i havnt learned that yet :S
Isobaric processes occur at a constant pressure, while isochoric processes occur at a constant volume. In other words, the volume changes in an isobaric process, while the pressure remains constant. In an isochoric process, the volume remains constant while the pressure changes.
A quasistatic process is a slow and gradual change in a system, allowing it to maintain equilibrium throughout the process. This means that the system remains in a state of internal balance, without any sudden changes or disturbances. Quasistatic processes are often used in thermodynamics to simplify complex systems and make calculations easier.
An adiabatic process occurs without any heat exchange with the surroundings, meaning that the system does not gain or lose heat. In contrast, an isothermal process occurs at a constant temperature, meaning that the system is in thermal equilibrium with its surroundings. In an adiabatic process, the temperature can change, while in an isothermal process, the temperature remains constant.
The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted. These processes demonstrate different ways in which energy can be transferred or converted within a system. For example, an isobaric process involves energy transfer through work, while an adiabatic process involves energy transfer through changes in internal energy.
A common example of an isobaric process is a gas expanding in a cylinder with a piston, where the pressure remains constant. An isochoric process can be seen in a sealed container with a fixed volume, such as a pressure cooker. Quasistatic processes are often used in the design of engines and turbines. An adiabatic process can be observed in the compression of gas in a bicycle pump or in the expansion of air in a balloon.