Learn Boyle's/Mariotte's Law tutorial, example, formula

Boyle's/Mariotte's Law Tutorial

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Boyle's/Mariotte's Law Tutorial

Boyle's/Mariotte's Law:
Boyle's law states that the volume of a gas increases when the pressure decreases at a constant temperature.

Boyle's/Mariotte's Law Formula :
Gas Equation: P_iV_i = P_fV_f
Initial Pressure(P_i) = P_fV_f / V_i
Initial Volume(V_i) = P_fV_f / P_i
Final Pressure(P_f) = P_iV_i / V_f
Final Volume(V_f) = P_iV_i / P_f
where,
P_i = Initial Pressure,
V_i = Initial Volume,
P_f = Final Pressure,
V_f = Final Volume.

Boyle's/Mariotte'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) = 80 L
This example will guide you to calculate the volume manually.

Related Calculator:
>> Boyle's/Mariotte's Law Calculator.

This tutorial will help you dynamically to find the Boyle's/Mariotte's Law problems.