Boiling Point Calculator (Water)

Introduction

The boiling point of a substance is the temperature at which it changes from a liquid to a gas under a specific pressure. To calculate the boiling point based on pressure in inches of mercury (inHg), you can use the formula: bp = 49.161 * ln(p) + 44.932. This calculator simplifies the process for you.

How to Use

To find the boiling point (in degrees Fahrenheit) of a substance at a given pressure (inHg), follow these steps:

Input the pressure value (inHg) into the provided field.
Click the “Calculate” button to determine the boiling point.

Formula

The formula for calculating the boiling point (bp) based on pressure (p) in inches of mercury (inHg) is as follows:

bp = 49.161 * ln(p) + 44.932

Example

Let’s say you have a pressure of 29.92 inHg. Using the formula:

bp = 49.161 * ln(29.92) + 44.932 ≈ 212.5°F

So, at a pressure of 29.92 inHg, the boiling point is approximately 212.5°F.

FAQs

Q1: What is ln(p) in the formula?

A1: ln(p) represents the natural logarithm of the pressure in inches of mercury (inHg).

Q2: Is this formula applicable to all substances?

A2: The formula is primarily suitable for determining the boiling point of water under varying pressures. It may not be accurate for other substances.

Q3: What is the significance of the boiling point?

A3: The boiling point is essential for various applications, such as cooking, chemistry, and climate science, as it indicates when a substance transitions from a liquid to a gas.

Conclusion

Calculating the boiling point based on pressure (inHg) is a fundamental aspect of understanding how substances behave under different conditions. With the provided formula and this Boiling Point Calculator, you can easily determine the boiling point of water or other applicable substances.