Boyle’s law

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 law

Equation of Boyle's law:

Gas Equation: P_iV_i = P_fV_f

where,

• P_i = Initial Pressure,
• V_i = Initial Volume,
• P_f = Final Pressure,
• V_f = 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. P_i = 100 kPa, V_i = 4 L, V_f = 15 L

Step 1:

Substitute the values in the below final pressure equation: Final Pressure(P_f) = P_iV_i / V_f = (100 x 4) / 15 = 400 / 15 Final Pressure(P_f) = 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. P_i = 150 kPa, V_i = 8 L, P_f = 125 kPa

Step 1:

Substitute the values in the below volume equation: Final Volume(V_f) = P_iV_i / P_f = (150 x 8) / 125 = 1200 / 125 Final Volume(V_f) = 9.6 L This example will guide you to calculate the volume manually.