What is Charles's Law?

Charles's Law is a fundamental principle in thermodynamics that explains the direct relationship between the temperature and volume of a gas when pressure remains constant.

The volume of a gas is directly proportional to its temperature, provided the pressure remains constant. In simple terms, as the temperature of a gas increases, its volume also increases, and vice versa.

This relationship is captured in the formula:

\(\frac{V_1}{T_1} = \frac{V_2}{T_2}\)

Where:

  • \({V_1}\) and \({V_2}\) represent the initial and final volumes of the gas.
  • \({T_1}\) and \({T_2}\) are the initial and final temperatures in Kelvin.

Remember

Two key details to keep in mind when it comes to Charles's Law.

  • Always convert temperatures to Kelvin
    (\(K = °C + 273\)) to accurately apply Charles's Law.

  • The law only applies if the pressure remains unchanged.

Importance

Charles's Law is critical for students studying physics, chemistry, or thermodynamics, as it applies to various scientific fields. Whether you're analyzing gas behavior in industrial processes or working on a lab experiment, mastering this law will help you understand how temperature and volume interact in gases.

Charles's Law also represents an underlying relationship that holds true for the Ideal Gas Law.
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Related Topic

Boyle's Law

The Relationship Between Pressure and Volume in Gases
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