Isobaric Process in Physics| Daily Life Examples

An isobaric process is a thermodynamic process during which the pressure of a system remains constant. In other words, the system undergoes changes in volume and temperature, but the pressure remains the same throughout the process.
The term “isobaric” is derived from the Greek words “iso,” meaning equal, and “baros,” meaning pressure.

Pressure of the gas = Constant

Daily Life Examples

Example	Description	Explanation
Cooking in a Pressure Cooker	Constant pressure inside the pressure cooker while cooking, allowing faster cooking at elevated pressure.	The pressure is maintained, affecting the temperature and volume changes.
Boiling Water in an Open Pot	Constant atmospheric pressure while boiling water; temperature increases as water changes to vapor.	Atmospheric pressure remains constant during the phase transition, influencing temperature and volume.
Inflating a Balloon	Increasing volume while maintaining roughly constant pressure inside the balloon during inflation.	As the balloon expands, the pressure inside stays relatively constant, impacting temperature.
Gas Cylinder Usage	Using compressed gases in cylinders, such as propane or medical oxygen, involves maintaining constant pressure.	Pressure is kept constant as the gas is released or used, influencing volume and temperature .
Car Tires	Maintaining recommended pressure in car tires involves adjusting the volume of air to keep pressure constant.	Adjusting the volume of air in the tire to maintain a constant pressure, affecting temperature.
Chemical Reactions in Open Containers	Some chemical reactions in open containers occur at constant atmospheric pressure, resembling isobaric processes.	Pressure is roughly constant during the reaction, influencing temperature and volume.

Numerical Form

For an isobaric process, where the pressure (P) is constant, the mathematical equation that relates the initial and final states of the system involves the ideal gas law. The ideal gas law is given by:

PV=nRT

Where:

• P is the pressure of the gas (constant in an isobaric process).
• V is the volume of the gas.
• n is the number of moles of the gas.
• R is the ideal gas constant.
• T is the temperature of the gas.

For an isobaric process, the pressure (P) is constant, so we can express the ideal gas law as:

V₁/T₁=V₂/T₂

Here, V₁ and T₁ are the initial volume and temperature, and V₂ and T₂ are the final volume and temperature, respectively.