Vapor Pressure Calculator

Step-by-Step Guide to Using the Vapor Pressure Calculator

Understanding the Vapor Pressure Calculator

This guide provides detailed, step-by-step instructions on how to effectively use the Vapor Pressure Calculator to determine the vapor pressure of various substances, calculate the boiling point at different altitudes, and compute the relative vapor pressure.

Step 1: Input the Temperature

Temperature (°C): Begin by entering the temperature of the substance in degrees Celsius. The input field is a number type, and you must input a valid temperature between -273.15°C and 1000°C. It is required to input this value, and you can enter decimal values with a precision of two decimal places to ensure accuracy.

Step 2: Select the Substance

Substance: Next, select the type of substance from the dropdown menu provided. You can choose from three options: Water, Ethanol, or Methanol. Selecting a substance is required for the calculation logic to determine the correct vapor pressure based on the substance’s chemical properties.

Step 3: Enter the Altitude

Altitude (meters): Enter the altitude in meters at which you want to calculate the boiling point and other properties. The calculator accepts values between -500 meters and 10000 meters. Like the temperature, this field is required, and the calculator allows entries in integer format.

Step 4: Review the Results

Once you have entered all the required inputs, the calculator will output the results in several fields:

• Vapor Pressure: This field displays the vapor pressure of the selected substance at the given temperature. The result is presented in kilopascals (kPa) with two decimal precision. This calculation utilizes formulas specific to the chosen substance.
• Boiling Point at Altitude: The calculator provides the adjusted boiling point based on the altitude you entered. This result is given in degrees Celsius (°C) with one decimal precision.
• Relative Vapor Pressure: This percentage represents the vapor pressure relative to standard atmospheric pressure (101.325 kPa), calculated to two decimal places.

By following these steps, you can effectively utilize the Vapor Pressure Calculator to obtain accurate data for your scientific and engineering needs.