This **Gay-Lussac Law Calculator** can determine the **volume or temperature change** of gas if you provide 3 out of the 4 variables in the Gay-Lussac equation where the pressure (p) is constant. You can find the formulas used below the tool.

## How does this Volume and Temperature Changes by Gay-Lussac Law Calculator work?

This chemistry tool can be used to determine any change in volume *or* temperature of gas applying the Gay-Lussac Law which states that when the pressure of dry gas is kept constant, the Kelvin *temperature* and the *gas volume* will be directly related. This law results in the formulas explained below that are applied by this *Gay-Lussac Law Calculator*:

**Gay-Lussac Law standard formula: V _{1}/T_{1}= V_{2}/T_{2}**

In order to estimate any variable from the four within the equation given above the user should input 3 variables and let unfilled the one to be computed and so:

- If the value of V_{1 } or the one of the V_{2 }needs to be calculated then the equations applied are:

**V _{1} = T_{1}*V_{2}/T_{2}**

**V _{2} = T_{2}*V_{1}/T_{1}**

- If the value of T_{1 } or the one of the T_{2 }needs to be determined then the formulas applicable are:

**T _{1} = T_{2}*V_{1}/V_{2}**

**T _{2} = T_{1}*V_{2}/V_{1}**

Where:

**V _{1}** is the volume measured/assumed initially;

**V _{2}** is the volume measured after the temperature changes/is assumed to be changed;

**T _{1}** is the temperature measured/assumed initially;

**T _{2}** is the temperature measured after the volume changes/is assumed to be changed;

*Assumption: Pressure (p) and Mass (m) stay constant*.

The tool allows choosing between multiple units depending on the variable type as detailed here, while the conversion rates are:

- For volume the measurement units available are:

From: |
To: m^{3} |

l | 0.001 |

ml | 0.000001 |

ft^{3} |
0.02831685 |

in^{3} |
0.00001638706 |

- For temperature the supported measurement units are: Kelvin, Celsius and Fahrenheit. The equations used to convert to Kelvin are:

**From °C to**

**K**= t°C + 273.15

**From °F to K **= (t°F + 459.67) * 5/9

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