Pressure Decrease Calculator

This calculator determines the decrease in pressure when the volume of a gas is changed at constant temperature and amount of gas.

Input Parameters

Calculation Results

Pressure Decrease (ΔP)

0 Pa

Where:
ΔP = P₁ - P₂
P₁ = Initial Pressure
P₂ = Final Pressure

Pressure Decrease Calculator Usage Guide

Learn how to use the Pressure Decrease Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the initial pressure (P₁) in Pascals (Pa).
  2. Enter the final pressure (P₂) in Pascals (Pa).
  3. Enter the temperature (T) in Kelvin (K).
  4. The gas constant (R) is set to 8.314 J/(mol·K) by default, but you can change it if needed.
  5. Click the "Calculate" button to compute the pressure decrease (ΔP = P₁ - P₂).
  6. Click the "Reset" button to clear all input fields and results.

Working Principle

The pressure decrease is calculated by subtracting the final pressure from the initial pressure. This is based on the ideal gas law, which states that the product of pressure (P) and volume (V) is proportional to the number of moles of gas (n) and the temperature (T), i.e., PV = nRT. When the volume changes at constant temperature and amount of gas, the pressure changes inversely.