What is Gay-Lussac’s Law?

Gay-Lussac’s Law, named after French chemist Joseph Louis Gay-Lussac, is a gas law that describes the relationship between the pressure and temperature of a fixed amount of gas kept at constant volume. The law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas when the volume is kept constant. Mathematically, it is expressed as P1/T1 = P2/T2, where P1 and T1 are the initial pressure and temperature, and P2 and T2 are the final pressure and temperature.

How to Use the Gay-Lussac’s Law Calculator

Step 1: Enter the Initial Pressure (P1)

Input the value for the initial pressure in the “Initial Pressure (P1)” field. Select the appropriate unit (Pa, kPa, atm, or bar) from the dropdown menu next to the input field.

Step 2: Input the Initial Temperature (T1)

Enter the value for the initial temperature in the “Initial Temperature (T1)” field. Choose the correct temperature unit (K, °C, or °F) from the dropdown menu beside the input field.

Step 3: Provide Either Final Pressure (P2) or Final Temperature (T2)

Depending on what you want to calculate, enter either the final pressure in the “Final Pressure (P2)” field or the final temperature in the “Final Temperature (T2)” field. Select the appropriate units for the value you enter.

Step 4: Click the “Calculate” Button

After entering the required values, click the “Calculate” button. The calculator will process the information and display the result.

Step 5: Interpret the Results

The calculator will show the calculated value (either final pressure or final temperature) in the result section. It will also provide a brief explanation of how the result was obtained using Gay-Lussac’s Law.

Step 6: Adjust Units if Necessary

If you need the result in a different unit, you can change the unit in the dropdown menu next to the calculated value field and click “Calculate” again to get the converted result.