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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Chemistry » Application of Gas-Law

Application of Gas-Law

In chemistry, gas laws relate to the pressure, volume, and temperature of a gas. Read on for comprehensive notes on the everyday applications of gas laws.

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Gas laws are a group of physical principles that predict the behaviour of gases. Many of those laws pertain to ‘ideal’ gases in closed systems at degree Centigrade and pressure (STP). However, their concepts should be used to understand and influence the spread of physical and chemical processes within the body. Every application of gas laws works on the notion that pressure, volume, and temperature are all interrelated variables. Each gas law monitors the fluctuation within the other two variables while holding one variable as constant.

Explanation of the three gas law

Boyle’s law is a gas law in which the pressure and the volume have an inverse relation. If the pressure increases, the volume will decrease and vice versa.

Charles’s law is known as the law of volume. In this, the pressure is kept constant and the volume is directly proportional to the temperature.

In Gay-Lussac’s law, the volume remains constant, whereas the pressure remains directly proportional to the temperature.

Application of Gas Law

Boyle’s law could also quantify the entire problem in the throat because of the gas’s volume using body plethysmography, which is used to measure changes in volume within different parts of the body and characterise the consequences of altitude on gases in confined cavities within the body. As the altitude rises, ambient pressure falls, causing volume expansion in confined places consistent with Boyle’s law. Observe the expansion of a sealed bag of potato chips on an ascending commercial aircraft to demonstrate this phenomenon.

The operation of an air thermometer, which uses the change in volume of a gas (such as hydrogen) to display the change in temperature, or it’s going to be viewed more realistically by inserting a balloon crammed with gas into a freezer and monitoring the loss in volume that happens, demonstrates Gay-Lussac’s law. From the connection indicated in Charles’ law, we will see that increasing the temperature from 20 degrees C (273 degrees K) to 37 degrees C (310 degrees K) will increase the number of inspired gases.

When working with gases at normal temperatures and pressures, the combined gas law helps tons. Like other gas laws supporting ideal behaviour, it becomes less accurate at high temperatures and pressures. In thermodynamics and hydraulics, the law is employed. For instance, it will be used to forecast the weather by calculating the pressure, volume, and temperature of the gas in clouds.

In lifestyle, the combined gas law has applications. When the quantity of gas remains constant, but the pressure, volume, and temperature fluctuate, this rule applies. Cloud formation, refrigerators, and air conditioners, for instance, are all predicted by the law. It is also employed in computations involving thermodynamics and hydraulics.

The relationship between pressure and temperature is described by Gay-Lussac’s law which is employed within the mechanism of pressure relief valves on gas cylinders. When the pressure within a gas cylinder rises over a specified pressure limit thanks to rising temperature, the pressure safety valve opens to stop an explosion. Because most physiological activities occur at 37 degrees C, Gay-Lussac’s law has minimal therapeutic applicability.

Scuba diving may be a sport that involves diving underwater. Human lungs can be compared to the containers that retain the gas in scuba divers. Water pressure is above atmospheric pressure, and water pressure rises with depth. Water pressure rises with each incremental foot that divers descend. Divers must adjust their breathing to take care of the proper pressure balance between their lungs and, therefore, the water. To realise balance, this shift must also occur gradually. On a hot day, if a diver ascends swiftly with full lungs, the quantity of air within the lungs can quickly grow. As a result, he or she must swiftly exhale to permit the gas within the lungs to go away.

In this example, just two gases are present within the combination. As a result of this equation, oxygen accounts for 21% of the entire pressure of the atmosphere because it makes up 21% of the atmosphere. When people attend high altitudes and check out to breathe, they meet Dalton’s rule. Consistent with Dalton’s law, the partial pressure of oxygen falls as total air pressure lowers as they climb higher. When the partial pressure of oxygen decreases, it’s tough to inhale oxygen. When this happens, hypoxia, a dangerous medical issue that will cause death, can happen.

Conclusion

The combined gas law applies when there’s a closed container or compartment with a hard and fast amount of gas. The combined gas law gets its name because it combines three previous laws: Gay-Lussac’s law, Charles’ law, and Boyle’s law. These rules explain why the ratio of an element’s pressure and volume to temperature remains constant for a given amount of gas.

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How does the gas law help in real life?

Ans: Refrigeration is another example of the combined gas law in everyday life...Read full

State Charles’ law.

Ans: The physical principle known as Charles’ law states that the volume...Read full

Give a real-life application of Gay- Lussac's law

Ans: The relationship between pressure and temperature is described by Gay- Lu...Read full

State the combined gas law.

Ans: Boyle’s Law, Charles’ Law, and Gay- Lussac’s law are al...Read full

Ans: Refrigeration is another example of the combined gas law in everyday life. When removing heat from a system, refrigerators use the combined gas law. When the compressed gas held in refrigerator coils expands, the refrigeration process begins. 

As a result, the temperature of the gas is lowered, and heat energy is transferred from the coil material to the gas. The thermal energy is compressed when gas is forced through the coils. The temperature of the gas rises as a result of this. The heat is discharged into the outside air through the coils, allowing the refrigerator to stay cool. When compressed gas is fed back into the system, the cycle begins again.

Ans: The physical principle known as Charles’ law states that the volume of gas equals a constant value multiplied by its temperature as measured on the Kelvin scale (0K corresponds to -273.15°C).

Ans: The relationship between pressure and temperature is described by Gay- Lussac’s law, which is used in the mechanism of pressure relief valves on gas cylinders. When the pressure within a gas cylinder rises over a specified pressure limit due to rising temperature, the pressure relief valve opens to prevent an explosion. Because most physiological activities occur at 37°C, Gay- Lussac’s law has minimal therapeutic applicability.

Ans: Boyle’s Law, Charles’ Law, and Gay- Lussac’s law are all merged into the combined gas law. The ratio of the product of pressure and volume to the absolute temperature of a gas is equal to a constant, according to this formula.

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