Pv Nrt Calculator

Step-by-Step Guide to Using the PV nRT Gas Law Calculator

Input Requirements

The calculator requires you to input specific parameters related to the ideal gas law. These parameters include pressure, volume, number of moles, and temperature. Additionally, for each of these parameters, you need to select the appropriate units from the provided options.

Step 1: Enter Pressure

• Input Field: Pressure (P)
• Action: Enter the pressure value you wish to use in your calculation.
• Validation: The pressure value is required and must be greater than 0.0001.
• Unit Selection: Choose the unit for pressure from the options of atm, Pa, kPa, or mmHg.

Step 2: Enter Volume

• Input Field: Volume (V)
• Action: Enter the volume value needed for the calculation.
• Validation: The volume value is mandatory and must exceed 0.0001.
• Unit Selection: Select the volume unit from L, mL, or m³.

Step 3: Enter Number of Moles

• Input Field: Number of Moles (n)
• Action: Input the number of moles of the gas.
• Validation: This field is required, and the value must be greater than 0.0001.

Step 4: Enter Temperature

• Input Field: Temperature (T)
• Action: Provide the temperature value for the calculation.
• Validation: Temperature value is required and must be greater than 0.0001.
• Unit Selection: Choose from temperature units: K, °C, or °F.

Understanding the Results

Once all inputs are appropriately entered, proceed to calculate the gas law equations. The calculator will perform the following operations:

Gas Constant (R) Display

The calculator displays the gas constant, R, used in the equation as 0.08206 L⋅atm/(mol⋅K).

Ideal Gas Law Calculation

The result of the PV = nRT equation is calculated based on your provided inputs. It involves converting units to a consistent system and using the formula:

(pressure * pressureUnit) * (volume * volumeUnit) - (moles * 0.08206 * (temperature + temperatureUnit))

Deviation from Ideal Gas Law

The percentage deviation from the ideal gas law is calculated using:

abs((pressure * pressureUnit) * (volume * volumeUnit) - (moles * 0.08206 * (temperature + temperatureUnit))) / ((pressure * pressureUnit) * (volume * volumeUnit)) * 100

This result helps you identify how much the real scenario deviates from ideal conditions.