# What is the formula for Amontons law?

## What is the formula for Amontons law?

Amonton’s Law states that the pressure of an ideal gas varies directly with the absolute temperature when the volume of the sample is held constant. P 1/T 1 = P 2/T 2 or P/T = k, where k = nR/V.

### What is Amontons gas law?

Gay-Lussac’s law (also referred to as Amonton’s 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.

#### What is an example of Amontons law?

Amontons’ law explains why car manufacturers recommend adjusting the pressure of your tires before you start on a trip. The flexing of the tire as you drive inevitably raises the temperature of the air in the tire. When this happens, the pressure of the gas inside the tires increases.

How is Lussac’s Law calculated?

The law of Gay-Lussac is a variant of the ideal gas law where the volume of gas is held constant. The pressure of a gas is directly proportional to its temperature while the volume is kept constant. P / T = constant or Pi / Ti = Pf / Tf are the standard calculations for Gay-Lussac ‘s law.

Why do we use Kelvin in gas law?

The Kelvin scale is used in gas law problems because the pressure and volume of a gas depend on the kinetic energy or motion of the particles. The Kelvin scale is proportional to the KE of the particles… that is, 0 K (absolute zero) means 0 kinetic energy. 0 °C is simply the freezing point of water.

## What is held constant in Amonton’s law?

Amonton’s law was discovered in the late 1600s by a French physicist named Guillaume Amonton. According to Amonton’s law, if the volume of a gas is held constant, increasing the temperature of the gas increases its pressure. As the temperature of a gas increases, its pressure increases as well.

### Do you have to convert to Kelvin for Charles Law?

It’s tempting to just use the Celsius temperature, but you must first convert to Kelvin temperature (by adding 273) to get the correct relationships! Charles’ law predicts that volume will be zero at 0 K. 0 K is the absolutely lowest temperature possible, and is called absolute zero.

#### What is the pressure at STP in kPa?

101.325 kPa
Until 1982, STP was defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 1 atm (101.325 kPa). Since 1982, STP is defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 105 Pa (100 kPa, 1 bar).

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