Gay-Lussac’s Law Calculator

Gay Lussac’s Law Calculator

Enter any 3 values to calculate the missing variable

Initial Pressure (P1)

Pa kPa Bar atm psi

Initial Temperature (T1)

Kelvin (K) Celsius (°C) Fahrenheit (°F)

Final Pressure (P2)

Pa kPa Bar atm psi

Final Temperature (T2)

Kelvin (K) Celsius (°C) Fahrenheit (°F)

Calculate Reset

 

To apply Gay-Lussac’s Law, use the formula $P_1 / T_1 = P_2 / T_2$, ensuring the temperature is in Kelvin and pressure values are consistent.

The Gay-Lussac’s Law Calculator simplifies calculations involving the relationship between pressure and temperature in a gas under constant volume.

This law states that the pressure of a gas is directly proportional to its temperature in Kelvin. Widely used in physics and chemistry, Gay-Lussac’s Law is instrumental in understanding gas behavior in real-life applications, such as pressurized containers and thermal expansion systems.

Formula:

$\frac{P_1}{T_1} = \frac{P_2}{T_2}$

Variable	Description	Unit
$P_1$	Initial pressure	Pascals (Pa), Atmospheres (atm), or other consistent units
$T_1$	Initial temperature	Kelvin (K)
$P_2$	Final pressure	Pascals (Pa), Atmospheres (atm), or other consistent units
$T_2$	Final temperature	Kelvin (K)

Solved Calculations:

Example 1: Calculate Final Pressure ($P_2$)

Step	Value	Explanation
Initial Pressure ($P_1$)	$100 \, \text{kPa}$	Given
Initial Temperature ($T_1$)	$300 \, \text{K}$	Given
Final Temperature ($T_2$)	$450 \, \text{K}$	Given
Calculation	$P_2 = P_1 \cdot \frac{T_2}{T_1}$	Rearrange formula
	$P_2 = 100 \cdot \frac{450}{300}$	Substitute values
Result	$P_2 = 150 \, \text{kPa}$	Final pressure

 

Example 2: Calculate Initial Temperature ($T_1$)

Step	Value	Explanation
Initial Pressure ($P_1$)	$80 \, \text{kPa}$	Given
Final Pressure ($P_2$)	$120 \, \text{kPa}$	Given
Final Temperature ($T_2$)	$400 \, \text{K}$	Given
Calculation	$T_1 = T_2 \cdot \frac{P_1}{P_2}$	Rearrange formula
	$T_1 = 400 \cdot \frac{80}{120}$	Substitute values
Result	$T_1 = 266.67 \, \text{K}$	Initial temperature

What is the Gay-Lussac’s Law Calculator?

The Gay-Lussac’s Law Calculator is a practical tool that calculates the relationship between the pressure and temperature of a gas while keeping the volume constant.

Based on Gay-Lussac’s Law, it states that the pressure of a fixed amount of gas is directly proportional to its absolute temperature, provided the volume remains unchanged.

To use the calculator, you input values such as the initial pressure and temperature, along with either the final pressure or temperature, and the tool computes the missing variable.

For instance, if the initial pressure of a gas is 2 atm at 300 K and the temperature increases to 600 K, the calculator determines the final pressure.

This tool is particularly useful for physics and chemistry students, researchers, and professionals working with gas laws. It complements other calculators like the Combined Gas Law Calculator, Boyle’s Law Calculator, and Charles’ Law Calculator, helping users understand gas behavior under various conditions.

Additionally, it aids in solving real-life scenarios, such as understanding how pressure changes in a heated gas cylinder or analyzing gas behavior in controlled systems like engines or industrial processes.

Final Words:

In conclusion, the Gay-Lussac’s Law Calculator is a versatile and reliable tool for solving pressure-temperature relationships. It simplifies complex calculations and provides insights into gas behavior, making it indispensable for scientific and practical applications.