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Boyle’s law (sometimes referred to as the Boyle–Mariotte law, or Mariotte’s law) is an experimental gas law which describes how the pressure of a gas tends to decrease as the volume of a gas increases.
The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remain unchanged within a closed system
Calculator of Boyle’s lawDOWNLOAD CALCULATOR
Equation of Boyle’s law:
Gas Equation: PiVi = PfVf
- Pi = Initial Pressure,
- Vi = Initial Volume,
- Pf = Final Pressure,
- Vf = Final Volume.
Boyle’s Law Example:
Case 1: A certain amount of gas contains a volume of 4 L at 100 kPa pressure. Find the pressure of the gas if it occupies in 15 L container. Pi = 100 kPa, Vi = 4 L, Vf = 15 L
Substitute the values in the below final pressure equation: Final Pressure(Pf) = PiVi / Vf = (100 x 4) / 15 = 400 / 15 Final Pressure(Pf) = 26.67 kPa This example will guide you to calculate the final pressure manually.
Case 2: Find the final volume of gas, from 8 L of gas at 150 kPa until the pressure becomes 125 kPa. Pi = 150 kPa, Vi = 8 L, Pf = 125 kPa
Substitute the values in the below volume equation: Final Volume(Vf) = PiVi / Pf = (150 x 8) / 125 = 1200 / 125 Final Volume(Vf) = 9.6 L This example will guide you to calculate the volume manually.