What is the Combined Gas Law Calculator?

The Combined Gas Law Calculator helps users determine the final pressure of a gas when its volume and temperature change, keeping the amount of gas constant. By entering the initial pressure, initial and final volumes, and initial and final temperatures, the calculator uses the formula P1V1T1=P2V2T2\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}T1​P1​V1​​=T2​P2​V2​​ to compute the final pressure. This tool is useful for chemistry students, educators, and science enthusiasts to quickly analyze gas behavior without manual calculations.

How to Use:

1. Enter Initial Pressure (P₁, atm): Input the starting pressure of the gas in atmospheres.
2. Enter Initial Volume (V₁, L): Input the gas volume at the initial state.
3. Enter Initial Temperature (T₁, K): Input the initial temperature in Kelvin.
4. Enter Final Volume (V₂, L): Input the gas volume after the change.
5. Enter Final Temperature (T₂, K): Input the temperature after the change.
6. Click “Calculate”: The calculator computes the final pressure using P2=P1V1T2T1V2P₂ = \frac{P₁ V₁ T₂}{T₁ V₂}P2​=T1​V2​P1​V1​T2​​.
7. Review Result: The output shows the final pressure in atmospheres (atm), providing a clear reference for gas law calculations.