1. What is Charles's Law?

Charles's Law states that the volume of a given amount of gas is directly proportional to its temperature on the Kelvin scale when pressure is held constant. It's one of the fundamental gas laws in chemistry and physics.

2. How Does the Calculator Work?

The calculator uses Charles's Law equation:

Where:

• \( V_2 \) — Final volume (L)
• \( k \) — Proportionality constant (L/K)
• \( T_2 \) — Absolute temperature (K)

Explanation: The law shows that as temperature increases, volume increases proportionally when pressure remains constant.

3. Importance of Charles's Law

Details: Charles's Law is crucial for understanding gas behavior, designing engines, predicting weather balloon behavior, and many industrial processes involving gases.

4. Using the Calculator

Tips: Enter the constant (k) in L/K and temperature in Kelvin. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why must temperature be in Kelvin?
A: Kelvin is an absolute temperature scale where 0 K represents absolute zero, making it necessary for gas law calculations.

Q2: What are typical values for the constant k?
A: k is determined from initial conditions (V₁/T₁). For example, if a gas occupies 2L at 300K, k would be 2/300 = 0.0067 L/K.

Q3: Does Charles's Law apply to all gases?
A: It applies best to ideal gases under moderate conditions. Real gases deviate at high pressures or low temperatures.

Q4: How does pressure affect this calculation?
A: Charles's Law assumes constant pressure. For changing pressure, use the Combined Gas Law instead.

Q5: Can I use Celsius with Charles's Law?
A: No, you must convert Celsius to Kelvin first (K = °C + 273.15) as the relationship is only linear in Kelvin.